Question

Are you smarter than a second-grader? A random sample of 62 second-graders in a certain school district are given a standardized mathematics skills test. The sample mean score is x = 56. Assume the standard deviation of test scores is a = 16. The nationwide average score on this test is 52. The school superintendent wants to know whether the second-graders in her school district have greater math skills than the nationwide average. Use the a=0.05 level of significance and the critical value method. Part 1 of 5 (a) State the appropriate null and alternate hypotheses. H.P = 52 H,p> 52 This hypothesis test is aright-tailed test. Part: 1/5 Part 2 of 5 Find the critical value(s). Round the answer(s) to three decimal places, if necessary. If there is more than one critical value, separate them with commas. Critical value(s):||