# 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?