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 I = 53. Assume the standard deviation of test scores is = $ The nationwide average score on this test is 51. The school superintendent wants to know whether the second-graders in her school district are different from the nationwide average. Use the d= 0.05 level of significance and the critical value method. Part: 0 / 5 Part 1 of 5 (a) State the appropriate null and alternate hypotheses. This hypothesis test is a right-tailed test. X 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): Part: 2 / 5 Part 3 of 5 (b) Compute the value of the test statistic. Round the answer to at least two decimal places Part: 3 / 5 Part 4 of 5 Determine whether to reject He Submit Assignment Next Part O a