the mean weight of trucks traveling on a particular section of i-475 is not known. a state highway inspector needs an estimate of the population mean. he selects and weighs a random sample of 81 trucks and finds the mean weight is 15.8 tons. the population standard deviation is 3.8 tons. what is the 95% confidence interval (upper limit) for the population mean?

Answers

Answer 1

Answer:

14.7 and 16.9


Related Questions

Two eighth-grade classes are selling popcorn to raise money for an end-of-year field trip. One class is selling popcorn for $4.50 a bag and has already raised $270.00. The other class is selling popcorn for $5.00 a bag and has already raised $250.00 Write an equation that can be used to calculate p, the number of additional bags of popcorn each class needs to sell, so that the total amount raised is the same for both classes.

Answers

Answer:

can someone please answer

Explanation:

i have the same question

Find the value of x and y, given the following matrix equation: matrix x = y =

Answers

Based on the given matrix equation, the value of x and y are ±6 and 16 respectively.

How to determine the value of x and y.

In order to solve for the value of x and y, we would create an equation from the upper and lower part of this matrix respectively.

x² - 4 = 32   ...........(upper part)

y + y - 4 = y + 6  ....(lower part)

Next, we would solve for x:

x² - 4 = 32

x² = 32 + 4

x² = 36

x = ±√36

x = ±6.

For the value of y, we have:

y + y - 4 = y + 6

2y - 4 = y + 6

2y - y = 6 + 10

y = 16.

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 Answer: 6, -6

                  10

Explanation:

edge

Based on the element square shown above, how many neutrons would an atom of Boron usually have? Question 5 options: 5 6 10 11

Answers

Answer:

it is B i got it right can i get a like i just started brainly plus

Explanation:

A piece of copper (c = 0.385 joules over grams times degrees Celsius) undergoing a temperature change from 150°C to 225°C absorbs 3,500 joules of energy. What is the mass of the piece of copper? Express the answer to the nearest whole number. grams

Answers

The mass of the piece of copper, to the nearest whole number is 121 grams.

Given the following data:

Specific heat capacity of copper = 0.385 J/g°CInitial temperature = 150.0°CFinal temperature = 225.0°CQuantity of heat = 3,500 Joules

To calculate the mass of the piece of copper, to the nearest whole number:

Mathematically, quantity of heat is given by the formula;

[tex]Q = mc\theta[/tex]

Where:

Q represents the quantity of heat.m represents the mass of an object.c represents the specific heat capacity.[tex]\theta[/tex] represents the change in temperature.

Making "m" the subject of formula, we have:

[tex]m = \frac{Q}{c\theta}[/tex]

Substituting the given parameters into the formula, we have;

[tex]m = \frac{3500}{0.385(225-150)}\\\\m = \frac{3500}{0.385 \times 75} \\\\m = \frac{3500}{28.875}[/tex]

Mass, m = 121.21121 grams

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Answer:

121

Explanation:

just took it

Triangle A B C is shown. The length of side A B is 3 n minus 2. The length of side B C is 2 n. The length of side A C is n 3. Triangle ABC is shown in the diagram. The lengths of the sides are in terms of the variable n, where n ≥ 4. Complete the inequality. m∠ < m∠ < m∠

Answers

Answer:

b,a,c

Explanation:

Answer:

m∠ B < m∠ A < m∠ C

How would you choose to reduce the system shown to a 2 × 2? Explain why you would choose this approach. –3x y – 2z = 10 (1) 5x – 2y – 2z = 12 (2) x – y z = 23 (3)

Answers

Answer:

Eliminate y by adding equations (1) and (3) because the coefficients on y are opposites. Then eliminate y by multiplying equation (1) by 2 and adding it to equation (2). Eliminate z by subtracting equations (1) and (2) because the coefficients are the same. Then eliminate z by multiplying equation (3) by 2 and adding it to equation (1).  

Explanation:

find the glide reflection image of the black triangle

Answers

what image ? you have to attach it

What is the central thread that connects the three parts of Section VIII in The Way to Rainy Mountain?

Answers

Answer:

The central thread that connects the three parts of section VIII in "The way to rainy mountain" by N. Scott momaday,is that language is a powerful way to influence reality

what is the value of n in the equation –(2n + 4) + 6 = –9 + 4(2n + 1)?

Answers

Answer:

[tex]n = 0.7[/tex]

Explanation:

[tex] - (2n + 4) + 6 = - 9 + 4(2n + 1)[/tex]

[tex] - 2n - 4 + 6 = - 9 + 8n + 4[/tex]

[tex] - 2n + 2 = 8n - 5[/tex]

[tex]2 + 5 = 8n + 2n[/tex]

[tex]7 = 10n[/tex]

[tex] \frac{10n}{10} = \frac{7}{10} [/tex]

[tex]n = \frac{7}{10} [/tex]

[tex]n = 0.7[/tex]

it would be 0.7, that would be your answer!

What is the effect of the figurative language used in this excerpt? Choose three answers. It shows Hamlet’s willpower. It shows Hamlet’s indecision. It shows Hamlet’s determination. It shows Hamlet’s confusion. It shows Hamlet’s idleness.

Answers

The effect of the figurative language that is used in the excerpt is to

show Hamlet’s indecision. shows Hamlet’s confusion. shows Hamlet’s idleness.What is an excerpt?

An excerpt is an extra form film or a piece of music. It s a short form of text and here the excerpt refers to the figurative language of hamlet who is expressing himself and does make the use of certain words and adds creativity to the spoken language.

Find out more information about the figurative language.

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Answer:

Person above is correct 2,4, and 5

Explanation:

describe one way an invasive species, such as the zebra mussel, can decrease the carrying capacity for a native species in an ecosystem.

Answers

The zebra mussel is an invasive species that decrease the carrying capacity of native species by competing for limited food resources. Invasive species are harmful to the homeostasis of an ecosystem.

The carrying capacity refers to the maximum population size of a species sustained by specific environmental conditions.

The factors that affect the carrying capacity include the availability of both biotic (e.g., food, presence of invasive species, etc) and abiotic (e.g., water, habitat) resources.

For example, Zebra mussels, and Quagga mussels are invasive species that can decrease the carrying capacity of native mussels by taking away limited food and attaching themselves to the native mussels.

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write a few statements that open a file called greeting

Answers

Answer:

Good Morning,

Good Evening,

Hope this email find you in the best of your.

Hope you are having great time

Hope you are enjoying your time

Hope you enjoying good health

before the 1890s, who was responsible for printing election ballots?

Answers

Answer:as the voting ballots before the 1890s were in fact printed by the political parties themselves. Today the printing of ballots is a very serious business and there are strict regulations and control mechanisms in place in order to stop voter fraud which unfortunately is a big issue.

Explanation:

in the law of superposition which layer is the oldest brainly

Answers

law of superposition, a major principle of stratigraphy stating that within a sequence of layers of sedimentary rock, the oldest layer is (at the base) and that the layers are progressively younger with ascending order in the sequence.

Read the excerpt from chapter 8 of The Travels of Marco Polo. Dhofar is a fine city of great size and splendor lying about 500 miles north-west of Shihr. Here again the people are Saracens and worship Mahomet, and are subject to a count who is likewise subject to the sultan of Aden. You must understand that this city is still within the province of Aden. The city stands on the sea and has a very good port, frequented by many merchant ships that import and export great quantities of merchandise. Many good Arab steeds, and horses from other lands as well, are brought here, and the merchants make a handsome profit on them. The city has many other cities and towns under its sway. Here again good incense grows in profusion - I will tell you how. Which statement about Dhofar shows an objective perspective? "The people are Saracens and worship Mahomet." "The city stands on the sea and has a very good port." "Dhofar is a fine city of great size and splendor." "Here good incense grows in profusion."

Answers

Answer:

A

Explanation:

The people are Saracens and  worship Mahomet

Took the Test

I tried B and it was wrong, it is A

The statement about Dhofar that shows an objective perspective is: “The people are Saracens and worship Mahomet.”

What is an objective perspective?

An objective perspective has one that has state the fact without inserting the personal views as well as feelings. The first option has an example of an objective perspective. One can see there that the writer has stated a fact about the Dhofar people.

He actually did not talk about his like or the dislike for them and the neither were other personal views that included in the statement. According to the stanza many good Arab steeds, and horses from other lands as well, are brought here, and the merchants make a handsome profit on them.

Therefore, The statement which tells about Dhofar that shows an objective perspective is: “The people are Saracens and worship Mahomet.”

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The question seems to be incomplete, the complete part of the question will be:

Read the excerpt from chapter 8 of The Travels of Marco Polo.

Dhofar is a fine city of great size and splendor lying about 500 miles north-west of Shihr. Here again the people are Saracens and worship Mahomet, and are subject to a count who is likewise subject to the sultan of Aden. You must understand that this city is still within the province of Aden. The city stands on the sea and has a very good port, frequented by many merchant ships that import and export great quantities of merchandise. Many good Arab steeds, and horses from other lands as well, are brought here, and the merchants make a handsome profit on them. The city has many other cities and towns under its sway. Here again good incense grows in profusion - I will tell you how.

Which statement about Dhofar shows an objective perspective?

“The people are Saracens and worship Mahomet.”

“The city stands on the sea and has a very good port.”

“Dhofar is a fine city of great size and splendor.”

“Here good incense grows in profusion.”

a canoe can be paddled at 7 mph through a placid lake the stream flows at 3 mph

Answers

Using system of linear equations the distance at the fisherman and the bobbler meets ls 8 miles

Speed in still waters = 7 mph

Stream speed = 3 mph

Upstream speed of canoe = 7 - 3 = 4 mph

Distance between fisherman and bobbler = 14 miles

Let seperation distance = d

Meeting distance = 14 - d

using the relation :

Distance= (speed × time)

canoe distance , d = 4t - - - - (1)

Noobler distance = 14 - d = 3t ----(2)

Equate (1) and (2)

d/4 = (14 - d)/3

3d = 4 (14 - d)

3d = 56 - 4d

7d = 56

d = 8 miles

Hence, the distance is 8 miles

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the time take for the fisherman to meet the bobber is 2 hours

as given in the question ,

canoe being paddled  at 7mph (at still water)

speed of the stream  is 3mph

distance between the fisherman and the bobber is 14 miles

let the bobber and the canoe meet at a distance X

from the starting point of canoe.

then the distance of the meeting point from the fisherman is = (14 - X)

using the formula Distance = Speed x Time,

we have for the canoe,

D= 4T,   ----- (1)

for the bobber, 14 - X = 3T ----- (2)   ( speed of bobber = speed of stream= 3 MPH)

T is same in both equations, hence

=> [tex]\frac{X}{4} =\frac{14-X}{3}\\[/tex]

=> [tex]3X=(14-X)4[/tex]

=> [tex]3X=56-4X[/tex]

=>  [tex]7X=56[/tex]

=> [tex]X=8[/tex]

X= 8 miles

now , to find the time taken

place the value of x in equation(2)

=>[tex]14-X=3T[/tex]

=> [tex]14-8=3T[/tex]

=> 6 = 3T

=> T = 2 hours

we can say that ,

time take for the fisherman to meet the bobber is 2 hours

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the full question is :

You can paddle your canoe 7 mph through any placid lake. The stream flows at 3mph . The moment you start to paddle up stream a fisherman looses one of his bobbers in the water 14 miles up stream of you.

How many hours does it take for you and the bobber to meet?

Which words best describe the tone of the passage? bored and disappointed excited and nervous joyful and awestruck cold and critical

Answers

Answer: joyful and awestruck

Explanation:

The joyful and awestruck words best describe the tone of the passage. Thus, option (c) is correct.

What is passage?

The term “passage” refers to the explanation and description of a sentence in relation to a topic. The passage aimed to describe those details related to the theme of the story. The different passage is to justify to the different things as to clarify. The passage is to define the significant terms.

According to the passage, the tone is built on joyous and awestruck. In these words from the poetry, we see that the poet captured the people's joyous mood, which even outdid the dazzling waves. He was also taken aback by the cheerful mood and prosperity he witnessed.

As a result, the joyful and awestruck words best describe the tone of the passage. Therefore, option (c) is correct.

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which situation describes the best example of rotational motion?

Answers

Question:

Which situation describes the best example of rotational motion?

A. Craig sent the pool ball spinning toward the side pocket.

B. The skater repeated the figure eight on the ice.

C. Sara spun the dreidel on its pointed end.

D. The mouse ran in circles around the mousetrap.

Answer :

C

Explanation:

It's C, because it is spinning. It can't be D because it's going in a circle, not spinning. it can't be A because it doesn't really make sense. It can't be B because the Skater is repeating, not rotating. So the only logical answer is C.

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determine the force f applied to the round rod by each jaw of the pliers under a grip of 100 n.

Answers

Explanation:

nensnejjnsksnsjejejejdnhdnejdnjs jsisnjs j j j j j n

how long does sat take

Answers

Answer:

At least 3 hours with 15 minutes

Explanation:

what is the effect of jim’s dialogue in the story? check the three boxes that apply.

Answers

Answer:

The answer is;

B. It presents Jim’s language as he really speaks.

C.It shows that Jim is comfortable enough with Huck to share his negative opinion of the two men.

D.It contrasts Jim’s uneducated speech with his ability to recognize the men as rascals.

Explanation:

Here is the text that goes w/ the question:

"But, Huck, dese kings o' ourn is reglar rapscallions; dat's jist what dey is; dey's reglar rapscallions."

I got this right on Edg. (2021)

a 15.8 g sample contains 3.6 g of f, 4.9 g of h, and 7.3 g of c. what is the percent composition of fluorine in this sample?

Answers

The percentage mass of Fluorine in the sample can be calculated using the ratio formula. Hence, the percentage composition of Fluorine is 22.78%

Total grams of sample = 15.8 grams

Mass of Fluorine = 3.6 grams

Mass of hydrogen = 4.9 grams

Mass of carbon = 7.3 grams

The percentage composition of Fluorine can be written thus :

(Mass of Fluorine ÷ total mass) × 100%

Percentage composition = (3.6÷15.8) × 100%

Percentage composition = 0.2278 × 100% = 22.78%

Therefore, the percentage composition of Fluorine is 22.78%

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Taking into account the definition od percentage composition, the percent composition of fluorine in this sample is 22.78%.

The Percentage Composition is a measure of the amount of mass that an element occupies in a compound and indicates the percentage by mass of each element that is part of a compound.

To calculate the percentage of composition, it is necessary to know the mass of the element in a known mass of the compound.

In this case, you know that a 15.8 g sample contains 3.6 g of F, 4.9 g of H, and 7.3 g of C.

Dividing the mass amount of F present in the compound by the mass of the sample and multiplying it by 100 to obtain a percentage value, the percentage composition of fluorine is obtained:

[tex]percentage composition of fluorine=\frac{3.6 grams}{15.8 grams} x100[/tex]

percentage composition of fluorine= 22.78%

Finally, the percent composition of fluorine in this sample is 22.78%.

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An increase in childlessness is a recent trend in American family life. Please select the best answer from the choices provided T F

Answers

Answer:

True

Explanation:

Answer: True

Explanation:

a model of memory processing ranging from shallow to deeper processing is called

Answers

A model of memory processing ranging from shallow to deeper processing is called: levels of processing model.

What is a memory?

A memory can be defined as a terminology that is used to describe the available space on an electronic device that is typically used for the storage of data or any computer related information such as:

ImagesVideosTextsMusicCodesFolders

In computer science, the levels of processing model refers to a model of memory processing ranging from shallow to deeper processing and it was developed by Fergus Craik and Robert Lockhart in 1972.

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you own 15 cds. you want to randomly arrange 5 of them in a cd rack. what is the probability that the rack ends up in alphabetical order?

Answers

Answer:

30

Explanation:

observe three (3) different speaking situations in your environment. using the table below, list them down and distinguish the type of speech according to purpose and delivery used in each situation. also, provide an evaluation by identifying the positive point you noticed. for the relevant suggestion, give a piece of advice on how the speech can further be improved considering the type of speech where it belongs. one (1) point will be given for every correct answer written on each box. write your answer on a separate sheet of paper.

Answers

The question above wants to assess your ability to recognize the types of speech that occur around you. For that reason, I cannot answer this question for you, but I will show you how to answer this question.

First, you should look for articles and websites to show the types of speeches that exist. This will show you the characteristics of each speech and how you can identify them in your life. The most common types of speech are:

Informative speech: Provides information, tries to teach about something.Persuasive speech: Try to convince someone about something.Demonstrative speech: Tries to demonstrate the composition or operation of something.Entertaining speech: It's a fun speech with the aim of entertaining people.

Based on this, you should note the types of speech being spoken around you. In this way, you will answer your question as follows:

Show the type of speech.Show the context in which this speech is inserted.Show if the speech is effective in its purpose.Show how it can be improved.

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which graph represents y=⌈x⌉over the domain 3≤x≤6 ?

Answers

Answer:

i cant see the graphs

Explanation:

Study the image. Which statement best describes the rock? The rock has fine grains. The grains of the rock are sharp or jagged. The rock is banded. The bands of the rock run from the top to the bottom.

Answers

Fine grain are refered to as rocks or grains that has low graininess so that some have enlargement without undue coarseness present. The statement that best describes the rock is that the rock has fine grains.

A rock is commonly referred to as any naturally solid mass, aggregate of minerals or mineraloid matter.

Rocks does have chemical composition and are usually grouped into three main groups: igneous rocks, metamorphic rocks and sedimentary rocks

Conclusively, The fine-grained texture shows that the fast cooling lava did not have time to grow large crystals.

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Answer:

A

Explanation:

edge

Who said that the world is divided into two classes, the hunters and the huntees? Question 1 options: Zaroff Ivan Rainsford Whitney

Answers

The person is Rainsford :)

What is the theme? Nature is the best place for bird-watching. Nature is a source of inspiration. Nature makes people feel lonely.

Answers

Nature is a source of inspiration.

Nature Can inspire people by teaching how things grow, where things come from, how things come from, and learning how to take care of nature. Nature is one of the reasons of how we live. The theme of this explanation is that nature if one source kf how we stay alive.

Answer:

B

Explanation:

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