Students of Two Sections of a History Course Took a Common

question 43

Multiple Choice

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 and = 200, 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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