Random samples of 250 persons in the 30- to 40-year age group and 250 persons in the

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Random samples of 250 persons in the 30- to 40-year age group and 250 persons in the 60- to 70-year age group are asked about the average number of hours they sleep per night, and the following summary data are recorded.

Do these data demonstrate that the proportion of persons who have

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Statistics Principles And Methods

ISBN: 9780470904114

7th Edition

Authors: Richard A. Johnson, Gouri K. Bhattacharyya

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Question Posted: Apr 19, 2016 11:06 AM

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Random samples of 250 persons in the 30- to 40-year age group and 250 persons in the

Question:

Hours of Sleep Age s8 8 Total 30-40 173 77 250 60-70 120130 250 Total 293 207 500

Step by Step Answer:

Let p 1 and p 2 denote the population proportions of 8 hours of sleep for t...View the full answer

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