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Students of Two Sections of a History Course Took a Common

Question 47

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Students of two sections of a History course took a common final examination.The course instructor examines the variance in scores between the two sections.He selects random samples of n1 = 11 and n2 = 16 with sample variances of Students of two sections of a History course took a common final examination.The course instructor examines the variance in scores between the two sections.He selects random samples of n<sub>1</sub> = 11 and n<sub>2</sub> = 16 with sample variances of and ,respectively.Assuming that the population distributions are normal,construct a 90% confidence interval for the ratio of the population variance. A) [0.90,2.41] B) [0.50,2.00] C) [0.25,4.00] D) [0.79,5.70] and Students of two sections of a History course took a common final examination.The course instructor examines the variance in scores between the two sections.He selects random samples of n<sub>1</sub> = 11 and n<sub>2</sub> = 16 with sample variances of and ,respectively.Assuming that the population distributions are normal,construct a 90% confidence interval for the ratio of the population variance. A) [0.90,2.41] B) [0.50,2.00] C) [0.25,4.00] D) [0.79,5.70] ,respectively.Assuming that the population distributions are normal,construct a 90% confidence interval for the ratio of the population variance.


A) [0.90,2.41]
B) [0.50,2.00]
C) [0.25,4.00]
D) [0.79,5.70]

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