Two college instructors are interested in whether or not there is any variation in the way they grade math exams. They each grade the same set of 10 exams. The first instructor's grades have a variance of 41.59. The second instructor's grades have a variance of 65.44. What is the Test Statistic to test the Null Hypothesis H0: σ12 ≥ σ22 against the alternative Ha: σ12 < σ2 2 ?

Two college instructors are interested in whether or not there is any variation in the way they grade math exams. They each grade the same set of 10 exams. The first instructor's grades have a variance of 41.59. The second instructor's grades have a variance of 65.44. What is the Test Statistic to test the Null Hypothesis H0: σ12 ≥ σ22 against the alternative Ha: σ12 < σ2 2 ?

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section: Chapter Questions

Problem 8CR

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Question

Two college instructors are interested in whether or not there is any variation in the way they grade math exams. They each grade the same set of 10 exams. The first instructor's grades have a variance of 41.59. The second instructor's grades have a variance of 65.44. What is the Test Statistic to test the Null Hypothesis H₀: σ₁² ≥ σ₂² against the alternative H_a: σ₁² < σ_{2 ²}?

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