Question

In: Statistics and Probability

Suppose we are interested in comparing domestic and foreign cars. The following data is provided: What...

  1. Suppose we are interested in comparing domestic and foreign cars. The following data is provided:
    1. What is the 99% confidence interval for the difference between the average for domestic and foreign?
    2. What is the test statistic for the difference for domestic and foreign?
    3. What is the p-value?

Please show all formulas and steps to resolve questions.

Gender

Domestic

Foreign

Sample Size

20

22

Average MPG

20.7

24.94

Sample Standard Deviation

2.86

4.86

Solutions

Expert Solution

a.

b.

c.

The p-value is p = P(t>-3.401) = 0.0015

Please do upvote if you are satisfied! Let me know in the comments if anything is not clear. I will reply ASAP!

orchestra answered 2 years ago
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