Suppose that, in 1995, the weight of 16-year old males in the United States was normally distributed with a mean of 148 lbs and standard deviation equal to 19 lbs. Suppose that Roger, a public health researcher, believes that the popularity of video and computer gaming has made teenagers less active, and predicts that 16-year old males today weigh more than 16-year old males did in 1995. To test the theory, he chooses a random sample of 50 16-year old males and records their weights. The average weight of the sample is 153 lbs. Roger uses a z-test to test the hypothesis that the average weight of 16-year old males has increased. He calculates the z-statistic as 1.86 standard deviations above the mean. Use this standard normal z-distribution table to calculate the P-value of this statistic. Give your answer as a decimal rounded to four places. P-value:

Suppose that, in 1995, the weight of 16-year old males in the United States was normally distributed with a mean of 148 lbs and standard deviation equal to 19 lbs. Suppose that Roger, a public health researcher, believes that the popularity of video and computer gaming has made teenagers less active, and predicts that 16-year old males today weigh more than 16-year old males did in 1995. To test the theory, he chooses a random sample of 50 16-year old males and records their weights. The average weight of the sample is 153 lbs. Roger uses a z-test to test the hypothesis that the average weight of 16-year old males has increased. He calculates the z-statistic as 1.86 standard deviations above the mean. Use this standard normal z-distribution table to calculate the P-value of this statistic. Give your answer as a decimal rounded to four places. P-value:

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Description: Suppose that, in 1995, the weight of 16-year old males in the United States was normally distributed with a mean of 148 lbs and standard deviation equal to 19 lbs. Suppose that Roger, a public health researcher, believes that the popularity of video

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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