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Montano1993 [528]
3 years ago
5

A. Mean; constant

Mathematics
1 answer:
almond37 [142]3 years ago
6 0

Answer:

C

Step-by-step explanation:

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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
2 years ago
Help me please And ty
anastassius [24]
The answer is three.
6 0
3 years ago
How do I convert Miles to feet and feet to mile i was sick for the lesson so i dont know how to do it
Juliette [100K]
There are 5280 feet in a mile, if thats what youre asking..?
idk if this was helpful or not, sorry :/
4 0
3 years ago
Read 2 more answers
Pls someone help me im in a test and im stresssssing??
Dennis_Churaev [7]
Positive 5/8 hope this helps :) uno reverse btw lol
3 0
2 years ago
[-1 + (-4)] + (6/7 + 1/7)
Radda [10]

Answer:-4

Step-by-step explanation:

-1 +-4 is -5 and 6/7 + 1/7 =1 so -5 +1=-4

4 0
2 years ago
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