Use sample data provided in the following table to answer questions on this assessment. Unless required otherwise,
Question:
1a)
[Use data from problem 1] Test the hypothesis that the mean value of Weight1 is the same for Managers and Supervisors in the population. The p-value for this test is ______.
0.242 | ||
0.484 | ||
0.714 | ||
0.428 |
1b)
[Use data from problem 1] Test the hypothesis that the mean values of Rating1 and Rating2 are equal for Managers in the population. This test has ______ degrees of freedom.
11 | ||
12 | ||
29 | ||
30 |
1c)
[Use data from problem 1] Test the hypothesis that the mean values of Rating1 and Rating2 are equal for Supervisors in the population. At 5% level of significance the conclusion of this test is __________.
Fail to reject H0 and conclude that the mean value of Rating2 differs from mean value of Rating2 in the population. | ||
Reject H0 and conclude that the mean value of Rating2 differs from mean value of Rating2 in the population. | ||
Fail to reject H0 and conclude that the mean value of Rating2 equals mean value of Rating2 in the population. | ||
Reject H0 and conclude that the mean value of Rating2 equals mean value of Rating2 in the population. |
1d)
A professor claims that the average grade of students in her courses is 80%. Identify Type II error for this claim.
Fail to reject the claim that average grade is 80% when it is actually different from 80%. | ||
Reject the claim that average grade is 80% when it is actually 80%. | ||
Fail to reject the claim that average grade is 80% when it is actually 80%. | ||
Reject the claim that average grade is 80% when it is actually different from 80%. |