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Use the traditional method to test the given hypothesis. Assume that the population is normally distributed and that the sample has been randomly selected.
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 13.4. Use a significance level of 0.01 to test the teacher's claim. There is not sufficient evidence to warrant rejection of the claim that the standard deviation of the girl's tests scores is smaller than 16.1. There is not sufficient evidence to support the claim that the standard deviation of the girl's tests scores is smaller than 16.1. O There is sufficient evidence to support the claim that the standard deviation of the girl's tests scores is smaller than 16.1.
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