Essay
Use the traditional method to test the given hypothesis. Assume that the population is normally distributed and that the sample has been randomly selected.
-The standard deviation of math test scores at one high school is 16.1. A teacher claims that the standard deviation of the girls' test scores is smaller than 16.1. A random sample of 22 girls results in scores with a standard deviation of 14.3. Use a significance level of 0.01 to test the teacher's claim.
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