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svetoff [14.1K]
3 years ago
14

Help with this problem please.

Mathematics
1 answer:
saul85 [17]3 years ago
7 0
A. More reasonable is 5 because the 4 is closest to the lowest number, being 5.
B. About 10 times more
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Two companies manufacture a rubber material intended for use in an automotive application. The part will be subjected to abrasiv
user100 [1]

Step-by-step explanation:

Due to the time it took to solve this question, I had little time to type the answers fully

The answers are contained fully in the attachment I have uploaded.

A. H0: u1 = u2

H1: u1 not equal to u2

The t statistics was solved to be 3.03

The degree of freedom was solved to be 26

Given this information, this is a 3 tailed test, critical value at 5% = +-2.056

T stat > critical value

We therefore reject the null hypothesis at 5% and conclude they have different mean wear

The p value is calculated using excel and the result is 0.00544

We reject null at 5% since p value is less than 0.05

B. H0: u1 = u2

H1: u1>u2

Alpha = 0.05

Following a,

Test stat = 3.03

Df = 26

Critical value for 1 tailed test = 1.706

Test stat > 1.706

We reject H0 and conclude company 1 has higher mean wear.

We find p value for a right tailed distribution using excel

Tdist(3.03,26,1)

= 0.002722

We reject h0

C. Confidence interval

1.610 < u < 8.390

8 0
3 years ago
If 4 video games costs $125, how much does 1 video game cost?
scoray [572]

Answer:

$31.25

Step-by-step explanation:

divide 125 by 4

hope this helps you!!! also good luck!!!!

8 0
3 years ago
Read 2 more answers
what is the difference between the greatest and least amount of juice? could you please tell me how to do it
Debora [2.8K]

Answer:

More juice.

Step-by-step explanation:

The difference between the greatest and least amount of juice is that there is more juice in one cup. If this is not the answer you were looking for, please let me know, and I am sorry for the inconvienience.

6 0
3 years ago
How many employees worked fewer than 8 hours yesterday?
Llana [10]
You need to post an actual question on her to be answered
6 0
3 years ago
Read 2 more answers
Solve the equation above
saveliy_v [14]

Answer:

X = -2

Step-by-step explanation:

1/2 X (5X-8) = -9

multiply both sides of the equation by 2

2 X 1/2 X (5X - 8) = 2 X (-9)

1 X (5X - 8) = 2 X (-9)

Reduce the numbers with the greatest common divisor 2

5 x -8 = 2 x (-9)

5 x -8 = -18

Move constant to the right by adding its opposite to both sides

5X -8 + 8=-18 + 8

Then eliminate the opposites

5X = -18 + 8

Calculate the sum

5X = -10

Divide both sides of the equation by 5

5X DIVIDE 5 = -10 DIVIDE BY 5

X = -10 DIVIDE BY 5

X = -2

5 0
3 years ago
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