Explanation Given info: α = 0.05 , x 1 = 140 ( = 56 % of 25 0 ) , n 1 = 250 , x 2 = 141 ( = 47 % of 300 ) , and n 2 = 300 . Calculation: The hypotheses are given below: Null hypothesis: H 0 : p 1 ≤ p 2 Alternative hypothesis: H a : p 1 > p 2 Here, the test is one tailed test. Critical value: Step by step procedure to obtain the critical value using the MINITAB software: Choose Graph > Probability Distribution Plot choose View Probability > OK. From Distribution , choose ‘ Normal ’ distribution. Click the Shaded Area tab. Choose probability Value and Right Tail for the region of the curve to shade. Enter the probability value as 0.05 . Click OK . Output using the MINITAB software is given below:

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ISBN: 9780135901021

Author: Larson

Publisher: PEARSON EDUCATION (COLLEGE)

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Chapter 8.4, Problem 21E

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To check: Whether the claim that the proportion of the U.S. workforce that works 40 hours per week is greater for women than for men is support or not.

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Chapter 8.4, Problem 20E

Chapter 8.4, Problem 22E

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Chapter 8 Solutions

MYLAB STATISTICS: ELEMENTARY STATISTICS

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To check: Whether the claim that the proportion of the U.S. workforce that works 40 hours per week is greater for women than for men is support or not.

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