Assume that all grade-point averages are to be standardized on a scale between 0 and 6. How many grade-point averages must be obtained so that the sample mean is within 0.009 of the population mean? Assume that a 99% confidence level is desired. If using the range rule of thumb, o can be estimated as
range/4 = 6-0/4 = 1.5. Does the sample size seem practical?
The required sample size is____.
(Round up to the nearest whole number as needed.)
Does the sample size seem practical?
A. Yes, because the required sample size is a fairly large number.
B. Yes, because the required sample size is a fairly small number.
C. No, because the required sample size is a fairly small number.
D. No, because the required sample size is a fairly large number.