A random sample of 60 second graders in a certain school district are given a standardized mathematics skills test. The sample mean score is x = 53. Assume the standard deviation e test scores is o = 15. The nationwide average score on this test is 50. The school superintendent wants to know whether the second graders in her school district have greater math skills than the nationwide average. Testing the appropriate hypothesis test for a significance level of 0.025, • What would be the critical value? A. 1.96 B. 1,44 C. 1.645 D. 2.33 • What would be the test statistic and conclusion? A. 1.03; Reject Ho B. 1.55; Fail to reject Ho C. 1.03; Fail to reject Ho D. 1.55; Reject Ho

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