Conclusion and your statement: 8. (11 pts.) 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 13.3. Use a significance level of 0.01 to test the teacher's claim.
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Null hypothesis (H0): The standard deviation of the girls' test scores is not smaller than 16.1 (σ ≥ 16.1). Alternative hypothesis (H1): The standard deviation of the girls' test scores is smaller than 16.1 (σ < 16.1). Show more…
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The standard deviation of math test scores at one high school is 16.1 points. A teacher claims that the standard deviation of girls' test scores is smaller than 16.1. A random sample of 22 girls results in scores with a sample standard deviation of 14.6. Use this sample data along with a significance level of 0.01 to test the teacher's claim.
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The standard deviation of math test scores at one high school is 16.1 points. A teacher claims that the standard deviation of girls' test scores is smaller than 16.1. A random sample of 22 girls results in scores with a sample standard deviation of 14.6. Use a significance level of 0.01 to test the teacher's claim.
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