Commercial fishermen working in certain parts of the Atlantic Ocean sometimes find their efforts being hindered by the presence of whales. Ideally, they would like to scare away the whales without frightening the fish. One of the strategies being experimented with is to transmit underwater the sounds of a killer whale. On the 52 occasions that that technique has been tried, it worked 24 times (that is, the whales left the area immediately). Experience has shown, though, that more than 40% of all whales sighted near fishing boats leave on their own accord, anyway, probably just to get away from the noise of the boat.

16. What would a reasonable hypothesis test be: *

Ho: =0.46 versus Ha: 0.46

Ho: =0.4 versus Ha: = 0.46

Ho: 0.4 versus Ha: > 0.40

Ho: =0.46 versus Ha: > 0.46

17. Suppose you want to test Ho: 0.4 versus Ha: > 0.40 at the 0.05 level of significance. What would your conclusion be? *

Fail to reject Ho.

Reject Ho.

Accept not Ho

Accept Ha.

18. Which of the following are the assumptions that must be satisfied in order to be able to conduct a significance test for p? *

I, IV, and VII

I, IV, V and VI

I, III, and VI

I, II, and VII

19. The mean weight for a bag of chips is 8 ounces. If the hypothesis test is performed, how should you interpret a decision that fails to reject the null hypothesis? *

There is not enough evidence to support the claim that the mean weight for a bag of chips is 8 ounces

There is enough evidence to support the claim that the mean weight for a bag of chips is 8 ounces

There is enough evidence to reject the claim that the mean weight for a bag of chips is 8 ounces.

There is not enough evidence to reject the claim that the mean weight for a bag of chips is 8 ounces

20. Suppose the p-value for a test is 0.02. Which of the following is true? *

We will reject H0 at alpha = 0.01

We will reject H0 at alpha = 0.05

We will not reject H0 at alpha = 0.05

We will reject H0 at alpha equals 0.01, 0.05, and 0.10