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Final exam attachments:

98. (1 Point)

Attached is the SPSS outcome of a study done to determine whether the average GPA of male students of UCLA is less than 3.4 (n=10, s=0.29, and sample mean=3.1).  What can be concluded at 2% level of significance?

a. p-value is 0.013%, so reject null. Average GPA of students is less than 3.4.

b. t value is less than 2% so average GPA of students is less than 3.4.

c. Average GPA of students is not significantly less than 3.4.

d. Average GPA of students is less than 3.4

99. (1 Point)

Using the attached SPSS outcome for question 98, we can conclude that:

a. We are 95% sure that average GPA of students is about 2.9 to 3.3.

b. We are 95% sure that average GPA of students is about 3.1 to 3.7.

c. We are 95% sure that average GPA of students is about 3.5 to 3.9.

d. We are 95% sure that average GPA of students is less than 3.1.

100. (1 Point)

The attached SPSS table shows comparison of study time of a sample of male and female students of Rutgers University.

What can we conclude at 5% level of significance?

a. Reject null hypothesis. There is a significant difference between study time of male and female students.

b. Reject null hypothesis. There is no significant difference between study time of male and female students.

c. Fail to reject null hypothesis. There is a significant difference between study time of male and female students.

d. Fail to reject null hypothesis. There is no significant difference between study time of male and female students.