(Solved by Humans)-(a) identify the claim and state H 0 and H a , (b) find the
Question
(a) identify the claim and state H 0 and H a , (b) find the critical value(s) and identify the rejection region(s), (c) find the standardized test statistic x 2 , (d) decide whether to reject or fail to reject the null hypothesis, and (e) interpret the decision in the context of the original claim. Assume the population is normally distributed.?
18. A school administrator claims that the standard deviation for eighth-grade students on a U.S. history assessment test is greater than 30 points. A random sample of 18 eighth-grade students has a standard deviation of 30.6 points. At a = 0.01, is there enough evidence to support the administrator?s claim.
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