What is survey research?
Question 2
The national sales manager of Fast Grow Corp is working on next year's budget projections. He knows that the population standard deviation is 17.66 . To estimate the daily per diem cost for outside sales people, he has taken a random sample of 36 individual expense accounts and found a mean of 90.29 . The 91.08 percent confidence interval for the per diem expense is:
a. 86.45 to 94.13.
b. 60.27 to 120.37.
c. 85.29 to 95.29.
d. 74.43 to 107.9.
e. 84.32 to 96.26.