Suppose that a random sample of17

adults has a mean score of69

on a standardized personality test, with a standard deviation of6. (A higher score indicates a more personable participant.) If we assume that scores on this test are normally distributed, find a90% confidence interval for the mean score of all takers of this test. Then find the lower limit and upper limit of the90% confidence interval.

Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place. (If necessary, consult alist of formulas.)