A researcher at Florida International University (FIU) wants to estimate the average number of credits earned by students last semester at FIU. She randomly selects 750 students from last semester and finds that they averaged 13.75 credits per student. The population of interest to the researcher is:
a. all FIU students. c. all FIU students enrolled last semester.
b. all college students. d. the 750 FIU students selected at random.
Question 2
In regression analysis, which of the following is NOT a required assumption about the error term ?
a. The expected value of the error term is 0.
b. The variance of the error term is the same for all values of x.
c. The values of the error term are independent.
d. All are required assumptions about the error term.
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