Week 4 Homework Question 14 of 20 (1 point) | Question Attempt: 1 of Unlimited 7 8 9 10 11 12 13 14 15 16 17 18 = 19 Suppose that a random sample of 18 adults has a mean score of 67 on a standardized personality test, with a standard deviation of 7. (A higher score indicates a more personable participant. ) If we assume that scores on this test are normally distributed, find a 90% confidence interval for the mean score of all takers of this test. Give the lower limit and upper limit of the 90% confidence interval. Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place. (If necessary, consult a list of formulas.) Lower limit: X 5 ? Upper limit