The Survey of Study Habits and Attitudes (SSHA) is a psychological test that measures the motivation, attitudes, and study habits of college students. Scores range from 0 to 200 and follow (approximately) a Normal distribution, with mean of 110 and standard deviation s = 20. You suspect that incoming freshman have a mean m, which is different from 110 because they are often excited yet anxious about entering college. To verify your suspicion, you test the hypotheses

H0: m = 110, Ha: m 110

You give the SSHA to 50 students who are incoming freshman and find their mean score.

The P-value of the test of the null hypothesis is

A)

the probability, assuming the null hypothesis is true, that the test statistic will take a value at least as extreme as that actually observed.

B)

the probability, assuming the null hypothesis is false, that the test statistic will take a value at least as extreme as that actually observed.

C)

the probability the null hypothesis is true.

D)

the probability the null hypothesis is false.

26.

Suppose you observed the same sample mean = 115.35, but based on a sample of 100 students. What would the corresponding P-value be?

A)

0.0037

B)

0.0074

C)

0.9926

D)

None of the above

27.

If you observe a sample mean of = 115.35, what is the corresponding P-value?

A)

0.058

B)

0.029

C)

0.787

D)

None of the above