5. A local school district claims that the average reading score of 4th graders throughout the district is 76. A group of parents suspect that the real mean is lower than the district claims, so they conduct a random sample of 37 4th grade students and calculate their reading scores. a. State the null and alternative hypotheses needed to test the claim. b. In order to test the hypothesis at a significance level of 95%, what is the critical value (i.e., what is the cutoff point that separates the rejection region from the acceptance region)?

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