Statistics: Hypothesis tests: Z-test – #1961

Question: Question 17: Physical Science Assessment test. On a physical science assessment test, the scores of a random sample of 22 eighth grade students have a standard deviation of 22.7. This result prompts a test administrator to claim that the standard deviation for eight graders is less than 29. At the \[\alpha =0.10\], is there enough evidence to support the administrator claim?


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