Answer:
a
Step-by-step explanation:
:P
An elevator started at the first floor and went up 18 floors. It then came down 11 floors and went back up 16. At what floor was it stopped?
Answer:
24th
Step-by-step explanation:
1+18=19
19-11=8
8+16=24
A researcher claims that the variation in the salaries of elementary school teachers is greater than the variation in the salaries of secondary school teachers (the claim). A random sample of 30 elementary school teachers has a variance of $ 8324, and a random sample of 30 secondary school teachers has a variance of $2862. At α= 0.05, can the researcher conclude that the variation in the elementary school teachers' Salaries is greater than the variation in the secondary teachers' salaries? Use the P-value method.
Assume that all variables are normally distributed.
a. State the hypotheses and identify the claim.
b. Find the critical value.
c. Compute the test value.
d. Make the decision.
e. Summarize the results.
Answer:
a
The null hypothesis is [tex]H_o : \sigma^2_1 = \sigma^2 _2[/tex]
The alternative hypothesis is [tex]H_a : \sigma_1 ^2 > \sigma^2_2[/tex]
b
[tex]F_{critical} = 1.8608[/tex]
c
[tex]F = 2.9085[/tex]
d
The decision rule is
Reject the null hypothesis
e
There is sufficient evidence to support the researchers claim
Step-by-step explanation:
From the question we are told that
The first sample size is [tex]n_1 = 30[/tex]
The sample variance for elementary school is [tex]s^2_1 = 8324[/tex]
The second sample size is [tex]n_2 = 30[/tex]
The sample variance for the secondary school is [tex]s^2_2 = 2862[/tex]
The significance level is [tex]\alpha = 0.05[/tex]
The null hypothesis is [tex]H_o : \sigma^2_1 = \sigma^2 _2[/tex]
The alternative hypothesis is [tex]H_a : \sigma_1 ^2 > \sigma^2_2[/tex]
Generally from the F statistics table the critical value of [tex]\alpha = 0.05[/tex] at first and second degree of freedom [tex]df_1 = n_1 - 1 = 30 - 1 = 29[/tex] and [tex]df_2 = n_2 - 1 = 30 - 1 = 29[/tex] is
[tex]F_{critical} = 1.8608[/tex]
Generally the test statistics is mathematically represented as
[tex]F = \frac{s_1^2 }{s_2^2}[/tex]
=> [tex]F = \frac{8324 }{2862}[/tex]
=> [tex]F = 2.9085[/tex]
Generally from the value obtained we see that [tex]F > F_{critical }[/tex] Hence
The decision rule is
Reject the null hypothesis
The conclusion is
There is sufficient evidence to support the researchers claim
what apple group is the correct one
Answer:
i don`t understand you
Step-by-step explanation:
but i think i phone...?
Answer:
ummm there is no other context did you mean to post a picture? All I could find was this
The Apple User Group Connection (AUGC) was established in 1985 by Apple and led by Apple employee Ellen Petry Leanse.
11 ^ 2 power equals what
A number raised to a power is the same as multiplying the number by itself the number of times of the power.
11^2 = 11 x 11 = 121
The answer is 121
HELLLPPPP PLEASSSSEEE &&& THANK UUUU
Answer:
y = -1/2x + 1
General Formulas and Concepts:
Algebra I
Slope-Intercept Form: y = mx + b
m - slope b - y-interceptStep-by-step explanation:
Step 1: Define variables
Slope m = -1/2
y-intercept b = 1
Step 2: Write linear function
y = -1/2x + 1
A store had 50 bottles of olive oil. Each week, 40% of the olive oil bottles were sold and 20 new bottles arrived in shipments. Which recursive function best represents the number of bottles in the store, given that f(0) = 50?
Answer:
f(n) = f(n-1)*.6 + 20
Step-by-step explanation:
f(0) = 50
f(n) = f(n-1)*.6 + 20
In fact, since f(0) = 50, f(n) = 50.
What are multiplication facts that equal 9
Answer:
3*3 4.5*2 9*1
Step-by-step explanation:
Answer:
1×9,2×4.5,3×3,9×1
Step-by-step explanation:
I hope this helps in any way.
Have a great day!
PLEASE HELP ME WITH THIS ALGEBRA QUESTION!! THANK YOU!!
Answer:
The first four terms of the sequence are: {-10,-23,-62,-179}
Step-by-step explanation:
Given recursive formula is:
[tex]a_n = 3a_{n-1}+7[/tex]
First term = a1 = -10
The first term is already known. In order to find the next terms, we will put n=2,3,4 in the recursive formula.
Putting n=2
[tex]a_2 = 3a_{2-1}+7\\a_2 = 3a_1+7\\a_2 = 3(-10)+7\\a_2 = -30+7\\a_2 = -23[/tex]
Putting n=3
[tex]a_3 = 3a_{3-1}+7\\a_3 = 3a_2+7\\a_3 = 3(-23)+7\\a_3 = -69+7\\a_3 = -62[/tex]
Putting n=4
[tex]a_4 = 3a_{4-1}+7\\a_4 = 3a_3+7\\a_4 = 3(-62)+7\\a_4 = -186+7\\a_4 = -179[/tex]
Hence,
The first four terms of the sequence are: {-10,-23,-62,-179}
he first five multiples for the numbers 4 and 6 are shown below.
Multiples of 4: 4, 8, 12, 16, 20, . . .
Multiples of 6: 6, 12, 18, 24, 30, . . .
What is the least common multiple of 4 and 6?
2
4
12
24
Answer:
12
Step-by-step explanation:
Answer: 12
Step-by-step explanation:
Please help!!!!! Can show work I’m stuck !!!!!!!!!
I need help with this please
i give up on math. help.
Answer:
try b
Step-by-step explanation:
Answer:
The answer is A. g(x) = f(x) + 4
You are canning 40 cups of applesauce. You have 20 glass jars, each of which will hold 134 cups of applesauce. Choose the correct explanation(s) that explain why you do not have enough jars.
You do not have enough jars because 20 jars will only hold 35 cups of applesauce.
You do not have enough jars because you have enough applesauce left to completely fill 2 more jars, and almost fill a third jar.
You do not have enough jars because you need a total of 40×134=70 jars.
You do not have enough jars because the 20 jars would need to hold 2 cups each, but each holds 14-cup less than that.
Answer:
B
Step-by-step explanation:
took the test
What is the answer plz!!!! I Will mark brainliest!!!!!!
Answer:
a. she doesnt have any points
b. just draw 3 circles with a plus in them
c. kiara has 7 points
d. -7+7=0
Step-by-step explanation:
mark me brainliest
you can mark me brainliest by clicking the crown at the bottom of this answer
A triangle has interior measures of 20° and 90°. What is the measure of the third angle?
Combine 2x^2+5x-6+8x
a vase costs $2 bridget has some money if she gets $4.45 more she can buy 5 vases how much money does she have
Answer:
Bridget has $5.55.
Step-by-step explanation:
First let's find how much money Bridget needs to buy 5 vases. To do this, multiply the cost per vase by the amount of vases she wants to buy:
2 * 5 = 10
It would cost $10 to buy 5 vases.
Bridget needs $4.45 in order to buy 5 vases. So, to find how much money she already has, subtract the amount of money she needs from the total cost of the 5 vases:
10 - 4.45 = 5.55
Bridget has $5.55.
Answer:
$ 5.55
Step-by-step explanation:
Find the price of 5 vases
Cost of 5 vases = 5 * 2 = $ 10
She needs $4.45 to buy 5 vases. If we subtract this 4.45 from $10, the result will be the money she has already with her
Money Bridget has = 10 - 4.45
= $ 5.55
Parallel lines r and s are cut by two transversals, parallel lines t and u. Lines r and s are crossed by lines t and u to form 16 angles. Clockwise from top left, at the intersection of r and t, the angles are 1, 2, 3, 4; at the intersection of s and t, 5, 6, 7, 8; at the intersection of u and s, 9, 10, 11, 12; at the intersection of u and r, 13, 14, 15, 16. Which angles are alternate interior angles with angle 3? Angle5 and Angle13 Angle7 and Angle15 Angle6 and Angle16 Angle8 and Angle14 Mark this an
Answer:
5 and 13
Step-by-step explanation:
I got it right on edge
Answer:
5 and 13, got in right in edge 2020
Step-by-step explanation:
PLZ HELP ME I BEG YOU !!!!!!!!!!!!!!
What is the probability that a randomly selected camper likes swimming or having a cookout, but not both?
A.
B.
C.
D
The probability that a randomly selected camper likes to have a cookout or swimming, but not both, is 0.10.
What is the probability?The Probability in mathematics is the possibility of an event in time. In simple words, how many times that incident is happening in any given time interval.
The Venn diagram displays the campers’ preferences.
One circle is labeled S, 0.06,
the other circle is labeled C, 0.04,
the shared area is labeled 0.89,
and the outside area is labeled 0.01.
The probability that a randomly selected camper likes to have a cookout or swimming, but not both,
= 0.06 + 0.04
= 0.10
Therefore, 0.10 is the required probability.
To learn more about the probability;
brainly.com/question/11234923
#SPJ5
Help me out in this question please
20
Step-by-step explanation:There are two ways to solve this (both will end up with the same answer):
1st way:
You can find 4/9 of 36 to find how many displays the class explored so far. You can write it as 4/9 x 36, which is equal to 16. So, the class explored 16 displays so far. All you need to do is subtract 16 from 36 to find how many displays the class needs to explore, which can be written as 36-16, and is equal to 20.
Final answer: 20
2nd way:
You can do 1 minus 4/9 to find the left over fraction of the displays that the class needs to explore, which is equal to 5/9. Then, you need to find 5/9 of 36 to find how many displays are left for the class to explore. You can write it as 5/9 x 36, which is equal to 20.
Final answer: 20
Hope you understand and that this helps with your question :)
10 kg of potatoes cost $4.50. How much will 50 kg of potatoes cost at this rate?
Answer:
$22.5
Step-by-step explanation:
10 kg=$4.50
50kg = x
(do cross multiplication)
10x =225
x=$22.5
3600
in standard
form
Answer:
3.6 x 10^3
Step-by-step explanation:
Part A and Part B for Max's car together cost $1,693 dollars, Part A cost $58 dollars
more than twice what Part B cost. How much did each part cost?
Answer:
Part A: 1148
Part B: 545
Step-by-step explanation:
Part A: 2x + 58
Part B: x
2x + 58 + x = 1693
3x + 58 = 1693
3x = 1635
x = 545
Part A: 2x + 58 = 2(545) + 58 = 1148
Part B: x = 545
PLEASE HELP!
Find x - y less than 0.
A. - y - x
B. x - y
C. - x + y
I NEED HELP ,PLEASEEEE!!!!!
Shonda goes to a restaurant with no more than $15 to spend. She buys a burger that costs $10.50 and one other item. Write an equation to express how much money Shonda spent at the restaurant.
Answer:
she spent $10.50 sense she didnt buy anything she has $4.50 left
Step-by-step explanation:
answeerrrrrrrr pleaseeeee C:
Answer:
140 feet
Step-by-step explanation:
3 seconds times 20 = 1 minute
so you have to do 7 feet times 20 to get 140
Find the amount of interest to be paid.
Principal: $780
Annual Rate of Interest: 12 1/2%
Time: 6 months
Use the formula: i = prt (principal, rate, time)
Answer:
P = 780
R = 12 1/2%
T = 6
780 x 12 1/2% x 6 = $2808.005
This is my study island math and I need all the questions to be done so I’m doing them in order.
Answer:
A
Step-by-step explanation:
Hope I helped
Answer:
The answer is A, $11.60
Step-by-step explanation:
0.66=spent 9 minutes
0.66x9=5.94
5.94+5.66=$11.60
Btw, luv ur profile pic uwu!
rate of change of 15
Answer:A General Note: Rate of Change
The average rate of change between two input values is the total change of the function values (output values) divided by the change in the input values.
Step-by-step explanation: