Explanation Given info: The data shows the student evaluation scores of female and male professors. Calculation: State the test hypotheses. Let first population denote female and the second population denote male. Null hypothesis: H 0 : σ 1 = σ 2 Alternative hypothesis: H 1 : σ 1 ≠ σ 2 Test statistic and P-value: Software procedure: Step by step procedure to obtain test statistic and P -value using the MINITAB software: Choose Stat > Basic Statistics > 2 Variance . Under Data , choose Samples in different columns. In First, enter Female. In Second, enter Male. Check Options and enter the Confidence level as 95.0 . In Hypothesized ratio , enter StDev 1 / StDev 2 . Choose not equal in alternative . Click OK in all dialog boxes

13th Edition

ISBN: 9780134462455

Author: Mario F. Triola

Publisher: PEARSON

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Chapter 9.4, Problem 13BSC

To determine

To test: The claim that female and male professors have evaluation scores with the same variation.

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Chapter 9.4, Problem 12BSC

Chapter 9.4, Problem 14BSC

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= 12:02 WeBWorK / 2024 Fall Rafeek MTH23 D02 / 9.2 Testing the Mean mu / 3 38 WEBWORK Previous Problem Problem List Next Problem 9.2 Testing the Mean mu: Problem 3 (1 point) Test the claim that the population of sophomore college students has a mean grade point average greater than 2.2. Sample statistics include n = 71, x = 2.44, and s = 0.9. Use a significance level of a = 0.01. The test statistic is The P-Value is between : The final conclusion is < P-value < A. There is sufficient evidence to support the claim that the mean grade point average is greater than 2.2. ○ B. There is not sufficient evidence to support the claim that the mean grade point average is greater than 2.2. Note: You can earn partial credit on this problem. Note: You are in the Reduced Scoring Period. All work counts for 50% of the original. Preview My Answers Submit Answers You have attempted this problem 0 times. You have unlimited attempts remaining. . Oli wwm01.bcc.cuny.edu

Chapter 9 Solutions

Elementary Statistics (13th Edition)

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To test: The claim that female and male professors have evaluation scores with the same variation.

Solution Summary: The author concludes that female and male professors do not have evaluation scores with the same variation. The test statistic is 4.18 and the P -value is 0.045.

To test: The claim that female and male professors have evaluation scores with the same variation.

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Chapter 9 Solutions