An existing inventory for a test measuring self-esteem indicates that the scores have a standard deviation of 9 A psychologist gave the self-esteem test to a random sample of 150 individuals, and their mean score was 63 Construct a 90% confidence interval for the true mean of all test scores. Then complete the table below. Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place.
(If necessary, consult a list of formulas.)
What is the lower limit of the 90% confidence interval?
What is the upper limit of the 90% confidence interval?