An experimenter obtains on the basis of a sample of size 10

An experimenter obtains, on the basis of a sample of size 10, a 95% confidence interval estimate of mean height with confidence limits equal to 66 and 74 inches. Assuming his calculations are correct, this result also depends on which of the following assumptions:

Solution

Assumptions required: Sample is randomly drawn from normally distributed population.(because sample size is small)

If this was z-interval, then population standard deviation should also be known.