Chapter problem 10.49 To perform a hypothesis test using a = 0.05 to determine i

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Chapter problem 10.49 To perform a hypothesis test using a = 0.05 to determine if the on-time performances of these two airlines are different, what is the test statistic? QUESTION 12 Chapter problem 10.49 Perform a hypothesis test using = 0.05 to determine if the on-time performances of these two airlines are different, what is the p-value of the test? QUESTION 13 Chapter problem 10.49 What is the interval estimate of the difference in the on-time performances of these two airlines with a 95% confidence? O (0.188, 0.022) O (-0.022, 0.188) O (-0.188, -0.022) O (0.022, 0.188) QUESTION 14 Chapter problem 10.49 To perform a hypothesis test using a 0.05 to determine if the on-time performances of these two airlines are different, what conclusion we can draw from out test? O There is enough evidence to conclude that the on-time performances of United and Southwest are different. O There is not enough evidence to conclude that the on-time performances of United and Southwest are different. O There is enough evidence to conclude that the on-time performances of United and Southwest are not different. O There is not enough evidence to conclude that the on-time performances of United and Southwest are not different. QUESTION 15 Chapter problem 10.59 To test the claim that the average cost for a handy- man project in Atlanta is more than the average cost for a project in Chicago, what test should be used? O z test O t test O matched-pair t test O None of above

Explanation / Answer

Ans:

15)To compare average of two different populations ,we use t-test for comparing two means(independent samples)

Hence,t test will be correct answer.

(marched-pair test(dependent samples) is used for to see the effectiveness of some drug or process on same group of people i.e dependent samples)

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