The distribution of head circumference for full term newborn female infants is approximately normal with a mean of 33.8 cm and a standard deviation of 1.2 cm.

Determine the approximate percentage of full term newborn female infants with a head circumference between 31 cm and 36 cm. Enter your answer using two decimal places.

Answers

Answer 1

Using the normal distribution, it is found that 95.65% of full term newborn female infants with a head circumference between 31 cm and 36 cm.

Normal Probability Distribution

The z-score of a measure X of a normally distributed variable with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex] is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

The z-score measures how many standard deviations the measure is above or below the mean. Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.

The mean and the standard deviation are given, respectively, by:

[tex]\mu = 33.8, \sigma = 1.2[/tex]

The proportion of full term newborn female infants with a head circumference between 31 cm and 36 cm is the p-value of Z when X = 36 subtracted by the p-value of Z when X = 31, hence:

X = 36:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]Z = \frac{36 - 33.8}{1.2}[/tex]

Z = 1.83

Z = 1.83 has a p-value of 0.9664.

X = 31:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]Z = \frac{31 - 33.8}{1.2}[/tex]

Z = -2.33

Z = -2.33 has a p-value of 0.0099.

0.9664 - 0.0099 = 0.9565.

0.9565 = 95.65% of full term newborn female infants with a head circumference between 31 cm and 36 cm.

More can be learned about the normal distribution at https://brainly.com/question/24537145

#SPJ1


Related Questions

ADEF is translated 5 units straight up so that point F lands on the x-axis. where does point D land?

Answers

Point D would be translated to the point (0, 5).

What is translation?

Translation is an aspect of geometry that moves plane shapes from one point to another along the cartesian coordinates without changing the form in which the shape exists.

Analysis:

Point D is at (0,0) if it is translated up from 0,0 the point D moves 5 units along the y-axis while x axis remain same. So that the new point of D becomes (0,5)

In conclusion, the point D will land at point (0,5)

Learn more about translation: brainly.com/question/12861087

#SPJ1

Ted needs 2500 metres for job. What length is this in kilometres

Answers

Answer:

2.5 kilometers

Step-by-step explanation:

One kilometer is 1000 meters

To convert from metres to kilometers, we divide by 1000

2500 ÷ 1000 = 2.5km

Write the equation in standard form for the circle with center (9,0) and radius 3
15.

Answers

(x-9)^2 + y^2 = 3^2 (or 9)

PLEASE HELP! i need done ASAP.

Answers

Answer:

m<A = 120

m<BCD = 120

m<DEC = 30

m<BFE = 90

Step-by-step explanation:

m<A is 120 cause all internal angles equal 720 added together in hexagons. 720 ÷ 6 = 120

m<BCD is 120 cause regular hexagons have eqaul angles

m<DEC is 0 cause total of the angle of triangle of triangle EDC is 180 where m<D = 120 which leaves m<E + m<C = 60 since they are equal we can combine them to m<E • 2 = 60. Divide and we get 30

m<BFE =  90 cause m<AFB = 30 and m<AFE = 120 subtract 120 and 30 to get 90

Yolanda saves all the money from a regular baby-sitting job. The money in her savings account is increasing according to the equation y = 6x + 50, where x = number of hours worked and y = savings in dollars. Which table of values matches this equation?

Answers

Answer:

Table D

Step-by-step explanation:

I have all of the tables listed below and the correct one circled! I used to tutor my cousin about this topic!

I hope this helps and please feel free to comment, ask questions, give feedback, and correct me if I am wrong!

Have a great day!

:)

The 4th table in the option is the correct one.

What is an equation?

An equation is a formula that expresses the equality of two expressions, by connecting them with the equals sign =.

Given that, Yolanda saves all the money from a regular baby-sitting job. The money in her savings account is increasing according to the equation y = 6x + 50, where x = number of hours worked and y = savings in dollars.

The given equation is y = 6x + 50

Put x = 0

y = 50

Put x = 5

y = 80

Put x = 10

y = 110

Put x = 15

y = 140

Creating the table,

                 x                                                                 y

                 0                                                                50

                 5                                                                80

                 10                                                               110

                 15                                                               140

Hence, we get the table.

For more references on equation, click;

https://brainly.com/question/29657983

#SPJ2

Solve for x to the nearest tenth of centimetre

Answers

Answer:

Step-by-step explanation:

the number of keys on the keyring minus 2

Answers

Translating the given phrase into a variable expression is equal to k - 2.

What is a variable expression?

A variable expression refers to a mathematical equation which can be used to show the relationship that exist between a numerical quantity and a variable.

Next, we would translate the given phrase into a variable expression as follows:

Let the number of keys on the keyring be k.

Therefore, the variable expression is equal to k - 2.

Read more on expressions here: https://brainly.com/question/12189823

#SPJ1

Complete Question:

Translate the phrase into a variable expression. Use the letter k to name the variable. If necessary, use the asterisk (*) for multiplication and the slash (/) for division.

The number of keys on the keyring minus 2?

Find the volume of the prism.
8in. 5in. 5in

Answers

200, 8 x 5 x 5

because volume of prism = area of base x height

A class of 30 students plans to collect at least $500 in donations for a rehabilitation camp. They have collected $270. How much more should each student collect?

Answers

Here
Total students=30
Total donation =$500
Then
Remainder dollers=500-270
=230
Again
230/30
7.66
Hence $7.66 should collected by each students

A rectangle patio has a perimeter of 38 feet. If the length of the patio is 5 feet less than twice the width, find the dimensions of the patio

Answers

Answer:

The length is 11ft.

The width is 8ft.

Step-by-step explanation:

Hello!

Perimeter of a rectangle: [tex]P = 2(l + w)[/tex]

P = perimeterl = lengthw = width

We know that the length is 5 ft less than twice the width, which can be expressed by the equation: l = 2w - 5. We can plug in 38 for "P".

We can substitute the equation for l, and solve for the width.

Solve for W[tex]P = 2(l + w)[/tex][tex]38 = 2((2w - 5) + w)[/tex][tex]38 = 2(3w - 5)[/tex][tex]38 = 6w - 10[/tex][tex]48 = 6w[/tex][tex]8 = w[/tex]

The width is 8. We can solve for the length by plugging it back into the equation l = 2w - 5

Solve for Ll = 2w - 5l = 2(8) - 5l = 16 - 5l = 11

The length is 11.

The dimensions are 11 ft and 8 ft.

What is true of the function g(x) = -2x² + 5?
O g(x) is the multiplication of g and x.
O-212 +5 is the input of the function.
The variable x represents the independent variable.
The variable g represents the input of the function.

Answers

Answer:

C.) The variable x represents the independent variable

Step-by-step explanation:

The variable "x" is the independent variable because that is the value that we can manipulate. We cannot manipulate the dependent variable because it is determined by the independent variable. In that case, "y" would be the dependent variable because its value is dependent on what "x" is.

A.) is incorrect because g(x) symbolizes the input of the variable "x" into the g function.

B.) is incorrect because "x" is the input.

D.) is incorrect because "x" is the input.

sally has 10 pounds she wants to buy 28 cans of soda which cost 26p each. how much money does she spend and does she have enough

Answers

Answer:

she will need 728 pounds to buy 28 cans but she only has 10 pounds so she doesn't even have enough for 1 can of soda

find the prime factorization of 420​

Answers

Answer:

2,3,7,2,5

Step-by-step explanation:

When you factorize a number you divide them until the outcome numbers are prime. 420 is equal to 42 and 10.

42 is equal to 6 and 7 and 6 is 2 times 3

2,3,7 is prime

10 is 2 times 5

2 and 5 is prime

Answer:

420 = 2² × 3 × 5 × 7

Step-by-step explanation:

The first few prime numbers are:  2, 3, 5, 7, 11, 13, 17, ...

To find which prime numbers multiply together to make 420, start by dividing 420 by the first prime number, 2:

⇒ 420 ÷ 2 = 210

As 210 is not a prime number, we need to divide again.  Let's try dividing by 2 again:

⇒ 210 ÷ 2 = 105

As 105 is not a prime number, we need to divide again.  105 is not divisible by 2, so let's try dividing it by the next prime number, 3:

⇒ 105 ÷ 3 = 35

As 35 is not a prime number, we need to divide again.  35 is not divisible by 2 or 3, so let's try dividing it by the next prime number, 5:

⇒ 35 ÷ 5 = 7

As 7 is a prime number, we can stop.

Therefore, 420 is the product of all the prime numbers we found together with the final one:

⇒ 420 = 2 × 2 × 3 × 5 × 7

As 2 appears twice, we can write this using exponents:

⇒ 420 = 2² × 3 × 5 × 7

The regular hexagon has a radius of 4 in.

A regular hexagon has a radius of 4 inches.

What is the approximate area of the hexagon?

24 in.2
42 in.2
48 in.2
84 in.2

Answers

Given the radius of the regular hexagon, its area is approximately 42in².

Hence, option B) is the correct answer.

What is the approximate area of the hexagon?

Given that;

Radius of the regular hexagon = 4inArea A = ?

Since a regular hexagon can be divided into six equal triangle, we will determine the area of a single triangle and then multiply the area by 6 to get the area of the regular hexagon.

Angle of one triangle in the regular hexagon = 360°/6 = 60°.

To determine the height, we divide the triangle into two equal half, making a right angled triangle with hypotenuse 4in, Base 4in/2 = 2in.

We find the perpendicular height using Pythagoras theorem

h = √( (4)² - (2)² )

h = √( 16 - 4 )

h = √( 12 )

h = √( 2² × 3 )

h = 2√3

Now, we determine the area of a single triangle.

Area = (1/2) × base × height

Area = 0.5 × 4 × 2√3

Area = (4√3)in²

Now, to get the area of the regular hexagon, we multiply the area of the triangle by 6

Area of regular hexagon = 6 × (4√3)in²

Area of regular hexagon = 24(√3)in²

Area of regular hexagon = 41.57in² ≈ 42in²

Given the radius of the regular hexagon, its area is approximately 42in².

Hence, option B) is the correct answer.

Learn more about regular hexagons here: https://brainly.com/question/10941428

#SPJ1

 

Answer: b

Step-by-step explanation:

The revenue, in dollars, of a company that makes toy cars can be modeled by the polynomial 3x2+4x-60. The cost, in dollars, of producing the toy cars can be modeled by 3X2-x+ 200. The number of toy cars sold is represented by X

Answers

The equation that represents the profit function is P(x) = 5x - 260

How to determine the profit function?

The given parameters are:

C(x) = 3x^2 - x + 200 --- cost function

R(x) = 3x^2 + 4x - 60 --- revenue function

The profit function is calculated as:

P(x) =R(x) - C(x)

This gives

P(x) = 3x^2 + 4x - 60 - 3x^2 + x - 200

Evaluate the like terms

P(x) = 5x - 260

Hence, the equation that represents the profit function is P(x) = 5x - 260

Read more about profit and revenue at:

https://brainly.com/question/25623677

#SPJ1

Dylan bought seven candy bars for $10.50. How much did he pay for each candy bar?

Answers

Answer: 1.5 or 1 1/2

Step-by-step explanation:

He payed $1.50 for each candy bar

what is the type of rule in which you can find any number of term in sequence without knowing the first or previous term

Answers

The type of rule that can be used to find any number of terms in sequence without knowing the previous term is called the Explicit rule formula.

What is the Explicit rule formula?

The formula that determines the sequence's nth term is the explicit rule of an arithmetic sequence.

Using explicit formulae, one can compute any term in a series without first determining the value of the terms that came before it.

Therefore, we can conclude that the type of rule that can be used to find any number of terms in sequence without knowing the previous term is called the Explicit rule formula.

Learn more about Explicit rule formulas here:

https://brainly.com/question/2059043

#SPJ1

Select the correct answer.
Over which interval of the domain is function h decreasing?
25?

Answers

Answer:

the function is only increasing.

Step-by-step explanation:

please help i need the answer ASAP

Answers

Answer:

I believe what you would have to do is add each number so the top left box would be two and the bottom right would be 11

Step-by-step explanation:

Credit card A has an APR of 22% and an annual fee. All else being equal, at about what balance will the cards offer the same deal over the course of a year? (Assume all interest is compounded monthly)

Answers

All else being equal, at a $1,333.33 balance, the two credit cards will offer the same deal (finance charge) over a year.

What is a credit card finance charge?

A credit card finance charge is the fee associated with using credit.

Credit card issuers use the finance charges to minimize non-payment risks and earn some profits for extending credit to cardholders.

Data and Calculations:

                   Card A         Credit B

APR              22%               25%

Annual fee  $40                $0

To calculate the balance required, the required equation is

= 22%x + $40 = 25%x

Where x = required balance

Thus,

= 0.22x + $40 = 0.25x

= $40 = 0.03x (0.25x - 0.22x)

= 0.03x = $40

x = $40/0.03

x = $1,333.33

Question Completion:

Credit card A has an APR of 22% and an annual fee of $40, while credit card B has an APR of 25% and no annual fee.

Thus, all else being equal, at a $1,333.33 balance, the two credit cards will offer the same deal over the course of a year.

Learn more about credit card finance charges at https://brainly.com/question/22717601

#SPJ1

Find the area A and circumference C of a circle of diameter 12 cm. Use 3.14 for . Round the result to the nearest tenth.

Answers

37.68 is C and 113.04 is the A

Answer:

Area: 113cm²

Circumference: 37.7cm

Step-by-step explanation:

to find area use the formula πr², π being Pi (3.14) and r being radius

radius = 6cm (half the diameter)

3.14 × 6² = 113.04cm²

to find the circumference use the formula πd

diameter = 12cm

3.14 × 12 = 37.68

Find the area of each triangle.

Answers

Answer:

a)  30 square units

b)  36 square units

c)  18 square units

Step-by-step explanation:

Area of a triangle = 1/2 × base × height

Part (a)

Base = 10

Height = 6

⇒ Area = 1/2 × base × height

            = 1/2 × 10 × 6

            = 30 units²

Part (b)Base = 12Height = 6

⇒ Area = 1/2 × base × height

            = 1/2 × 12 × 6

            = 36 units²

Part (c)Base = 6Height = 6

⇒ Area = 1/2 × base × height

            = 1/2 × 6 × 6

            = 18 units²

(Need help answering these questions… please don’t give me links in the comments, because it doesn’t help me. Answer it in comments please. )



A bucket holds 5 gallons of water and a barrel holds 8.4 buckets of water.

a. What is the conversion factor to change gallons to buckets?

b. What is the conversion factor to change buckets to barrels?

c. A gallon (gal) of water is equivalent to 128 fluid ounces (fl oz). How many fl oz of water are in 1 barrel?

Answers

Answer:

a) 1/5 bucket = 1 gallon

b) 8.4 buckets = 1 barrel

c) 5376 fl oz per barrel

Step-by-step explanation:

a) From the given information, 1 bucket = 5 gallons. This means 1/5 of a bucket is 1 gallon.

b) From the given information, 8.4 buckets = 1 barrel. This seems to be in the form that the question is asking for. If the question was asking how many barrels were in a bucket the answer would be 1/8.4 barrels = 1 bucket.

c) From the previously determined conversion factors, we can take ounces to barrels by converting barrels down to gallons.

1/8.4 barrels = 1 bucket; 1/5 bucket = 1 gallon; 1 gallon = 128 fluid ounces

We need to set up a series of fractions that use these factors:

[tex]\frac{128 fl oz}{1 gallon}*\frac{1 gallon}{1/5 buckets}*\frac{1 bucket}{1/8.4 barrels}[/tex]

These fractions can be simplified to [tex]\frac{128 fl oz}{1 gallon}*\frac{5 gallon}{1 bucket}*\frac{8.4 buckets}{1 barrel}[/tex]

Multiply the fractions: 5376 fl oz per barrel

(Note that the units cancel out in the fractions so that only fluid ounces per barrel are left.)

How many whole numbers are there between 32 and 96?

Answers

Answer:

there are 20 while numbers between 32 and 96

Step-by-step explanation:

hope it helps and give me a brainliest

The number of whole numbers that come between 32 and 96 will be 64.

What is Algebra?

Algebra is the study of abstract symbols, while logic is the manipulation of all those ideas.

The definition of simplicity is making something simpler to achieve or grasp while also making it a little less difficult.

The number of whole numbers that come between 32 and 96 is given as,

⇒ 96 - 32

⇒ 64

More about the Algebra link is given below.

https://brainly.com/question/953809

#SPJ3

PLEASE HELP!!! I WiLL GIVE BRAINLIEST!!!!!
Identify the coefficients of x, y and z


5z - 2 + 6x + 3y

Answers

Answer:

x=5    y=3      z=5

Step-by-step explanation:

The coefficient is the number in front of the variable

Answer:

coefficient of x: 6coefficient of y: 3coefficient of z: 5

Step-by-step explanation:

The coefficient in an expression is the multiplier of a designated part of a term of the expression.

__

coefficients here

The given expression is

  5z -2 +6x +3y

It consists of four (4) terms, added together. One term is a constant, -2. The others each have a single variable that is multiplied by a constant. When we ask for the coefficient of the variable, we are asking for the value of that constant multiplier.

The term containing x is 6x. The multiplier of x in that term is 6, so we say ...

  the coefficient of x is 6.

The term containing y is 3y. The multiplier of y in that term is 3, so we say ...

  the coefficient of y is 3.

The term containing z is 5z. The multiplier of z in that term is 5, so we say ...

  the coefficient of z is 5.

__

other coefficients

In an expression such as πr²h, different parts of the expression will have different coefficients. If we ask for the coefficient of the expression, we are generally asking for the constant: π. (The Greek letter pi is the symbol used to represent the irrational constant ratio between the circumference and diameter of a circle. Is is about 3.1415926535....)

If we ask for the coefficient of h, we are asking for the product (πr²) that multiplies h in this expression. Similarly, the coefficient of is (πh). Note that we have specified a "designated part" of the expression for which we want the coefficient. This is important when we are solving equations.

__

The commutative property of multiplication means that parts of a product can be written in any order. That is, 5·z is the same product as z·5. When the constant and variable parts of the expression can be unambiguously identified, the order does not matter. In some cases, a constant coefficient may come in several parts: 3z·5·2 has a z-coefficient of 30, for example.

See below for a case where there may be some ambiguity.

__

exponents

In the expression r², the constant 2 that comes after the variable, written as a superscript, is called an "exponent," not a coefficient. Often on Brainly, and sometimes in curriculum materials, you will see this written as r2, because superscripts do not get properly rendered. If you're writing this in plain text, the form r^2 is preferred.

4^2/5 / 4^x/5 = 4^0

Can you help me please

Answers

the answer is x equals 2

Gray can ride his bike 6miles in 20 minutes at this rate how many miles can he ride in 100 minutes

Answers

30. Since he can ride the bike 6 miles in 20 mins, and 100 divided by 20 is 5, the answer would be given to you by multiplying 5x6, which is 30. So he can travel 30 miles in 100 minutes.

In the following graph we observe line segment AB being mapped by translation to line segment A'B'.



A. In two or more sentences, explain what test you could perform to check the validity of this translation.

B. Prove mathematically that the translation is valid using the test you mentioned above.

Answers

The translation of line AB to line A'B' is valid and the translation rule is (x,y) ⇒ (x - 7, y - 3)

How to validate the translation?

The graph that completes the question is added as an attachment

From the graph, we have:

A = (3,9) and B = (5,6)

A' = (-4,6) and B' = (-2,3)

Subtract the x and y coordinates of A' from A and B' from B.

So, we have:

AA' = (3 + 4, 9 - 6)

AA' = (7, 3)

BB' = (5 + 2, 6 - 3)

BB' = (7, 3)

See that:

AA' = BB' = (7, 3)

This means that the line AB is translated 7 units left and 3 units down

How to prove the translation mathematically

The translation above means:

(x,y) ⇒ (x - 7, y - 3)

Recall that:

A = (3,9) and B = (5,6)

So, we have:

A' = (3 - 7, 9 - 3)

A' = (-4, 6)

Also, we have:

B' = (5 - 7, 6 - 3)

B' = (-2, 3)

Hence, the translation is valid

Read more about translation at:

https://brainly.com/question/8959437

#SPJ1

Which polygon is a convex heptagon?

A polygon has 7 sides. No angles go inside of the shape.
A polygon has 8 sides. No angles go inside of the shape.
A polygon has 8 sides. One angle goes inside of the shape.
A polygon has 7 sides. One angle goes inside of the shape.

Answers

Option (A) "A polygon has 7 sides. No angles go inside of the shape" is correct.

What is a regular polygon?

A polygon is a geometric figure with a finite number of sides in two dimensions. On the sides or edges of a polygon, straight-line segments are joined end to end to form a closed shape. The vertices, also known as corners, are the points where two line segments meet and form an angle.

As we know, a convex heptagon is a polygon with seven sides, seven internal angles, and seven vertices, which means that a convex heptagon has seven sides.

A convex heptagon is a polygon that has 7 sides. No angles go inside of the shape.

Thus, option (A) "A polygon has 7 sides. No angles go inside of the shape" is correct.

Learn more about the regular polygon here:

brainly.com/question/11810316

#SPJ1

Answer: the first option

Step-by-step explanation:

Mark purchased a 12-pack of soda for
$5.86. What is the unit rate per soda?
(Round to the nearest cent!)

Answers

Answer:

  $0.49 per soda

Step-by-step explanation:

The cost per soda is found by dividing the cost by the number of sodas.

__

  $5.86/(12 sodas) = $0.48833.../soda ≈ $0.49/soda

The unit rate is $0.49 per soda.

Other Questions
Circe warned Odysseus about the ___, who sat on the rocks and lured sailors to their deaths.SirensLotus EatersScyllaCyclopsCharybdis PART B: Which of the following quotes from the text You can Buy Happiness if its an Experience supports the answer to Part A? Which would you expect to have thehighest pH (closest to 14)? please solve the question in the picture 20.0 g of bromic acid, HBrO3, is reacted with excess HBr.HBrO3 (aq) + 5 HBr (aq) 3 H2O (l) + 3 Br2 (aq)If 47.3 g of Br2 is produced, what is the percentage yield of Br2? Round your answer to the nearest whole percent. convertir 108 pies cubicos a yardas cubicas What happens to an object that is moving at 10 m/s if only balanced forces act on it? Heelp me! and please explain... WILL GIVE BRAINLISEST AND 60 POINTS !!!! Question 5(Multiple Choice Worth 4 points)(04.04)Which graph represents a linear function? japan's response to the great depression not involving the military 17. what does it mean if a personality test is reliable? a. a reliable test will give consistent results over time. b. a reliable test reveals forgotten experiences. c. a reliable test has strong personal bias. d. a reliable test accurately predicts? your actions. 3a: complete the table with values for x and y that makes this equation true 3x+y=153b: create a graph, plot these points, and find the slope of the line that goes through them. -9y- 10 = x5x +6y = -11 What evidence from the text best supports the idea that Old Major thinks that animals should be equal to humans? Check all that apply.Is it not crystal clear, then, comrades . . .?Only get rid of Man, and the produce of our labour would be our own.Almost overnight we could become rich and free. What then must we do?That is my message to you, comrades: Rebellion! WILL MARK AS BRAINLIST A dunk tank hold 30,533 moles of water? How many grams of water are in the tank? choose the question with the same meaning qui mange du jambon Until recently, my puppy did not know how to behave on his leash. Enrolling him in puppy class was the smartest thing we ever did. First, he learned to come when his name was called. After that, he learned to stay in one place. Before long, he was the best-behaved dog in our neighborhood!What type of phrase is enrolling him in puppy class? What does enrolling him in puppy class add to the text? Help please I really need it for today Read the passage below from Marigolds and answer the question.I had indeed lost my mind, for all the smoldering emotions of that summer swelled in me and burstthe great need for my mother who was never there, the hopelessness of our poverty and degradation, the bewilderment of being neither child nor woman and yet both at once, the fear unleashed by my fathers tears. And these feelings combined in one great impulse toward destruction.Based on the passage above, which of the following themes are evident in the story?A.loss of innocenceB.good overcomes evilC.value of familyD.love and sacrifice What are several theories aimed at explaining the function of sleep