Multiple Choice
The mean number of travel days per year for the outside salespeople employed by hardware
Distributors is to be estimated. The 0.90 degree of confidence is to be used. The mean of a small
Pilot study was 150 days, with a standard deviation of 14 days. If the population mean is to be
Estimated within two days, how many outside salespeople should be sampled?
A) 133
B) 452
C) 511
D) 2,100
Correct Answer:

Verified
Correct Answer:
Verified
Q58: College X is concerned about their employees
Q59: If 2,000 card-carrying members of a political
Q60: A statistics professor wishes to estimate the
Q61: Recently, a university surveyed recent graduates of
Q62: Mileage tests were conducted on a randomly
Q64: A sample of 20 is selected from
Q65: Dr. Patton is a professor of English.
Q66: i. The higher the degree of confidence,
Q67: A group of statistics students decided to
Q68: (i. The interval estimate states the range