Refer to the output from question #2. By looking at the 90% confidence interval the decision is:

Reject the nullhypothesis because 90%confidence interval contains 30,000.

Fail to reject thenullhypothesisbecause 90%confidence interval contains 30,000.

Reject thenullhypothesisbecause 90%confidence interval doesn'tcontain 30,000.

Fail to reject thenullhypothesisbecause 90%confidence intervaldoesn'tcontain 30,000.

Q2 IS Run the following code inRto test the hypothesis in question #1 at=0.10:t.test(Mileage,mu=30000,alternative="greater",conf.level= 0.9). What is the test statistic?

20

1.5253

0.07143

30,000. AND MILEAGE IS

Mileage

40060

24960

14310

17370

44740

44550

20250

33380

24270

41740

58630

35830

25750

28910

25090

43380

23940

43510

53680

31810

36780