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Are you smarter than a second-grader? A random sample of 51 second-graders in a certain school district are given a standardized mathematics skills test. The
Are you smarter than a second-grader? A random sample of 51 second-graders in a certain school district are given a standardized mathematics skills test. The sample mean score is ;= 52. Assume the standard deviation of test scores is 6= 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 different math skills from the nationwide average. Use the a=0.10 level of signicance and the P-value method with the TI-84 calculator. State the appropriate null and alternate hypotheses. This hypothesis test is a (Choose one) V test. Compute the P-value of the test statistic. Round the answer to at least four decimal places. P-value = X 5 Part: 2 / 4 Part 3 of 4 Determine whether to reject Ho. (Choose one) V the null hypothesis Ho. X 5 Part: 3 / 4 Part 4 of 4 Summarize the results. There (Choose one) enough evidence to conclude that the second-graders in the superintendent's school district have differe is the nationwide average. X 5 is not
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