A library claims that the standard deviation of the reading days for readers of a particular book

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A library claims that the standard deviation of the reading days for readers of a particular book is no more than 2 days. A random sample of 30 readers has a standard deviation of 3 days. At α = 0.10, is there enough evidence to reject the claim?

(a) identify the claim and state H0 and Ha,

(b) find the critical value(s) and identify the rejection region(s),

(c) find the standardized test statistic x2,

(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.

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Related Book For  book-img-for-question

Elementary Statistics Picturing The World

ISBN: 9781292260464

7th Global Edition

Authors: Betsy Farber, Ron Larson

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