1a) A claim has been made that only 5% of men in the U.S. play golf. As an avid golfer, I do not believe this claim. If I want to be 90% confident, and have 90% statistical power, what sample size would I need to disprove this claim if the true percentage of men playing golf is 8%? 1b) A claim has been made that men in the age group 20-30 average the same height in inches in the U.S. and the Netherland (the land of giants, by the way). I do not believe this claim. I want to be 99% confident and have 90% power. If I think both populations have a population standard deviation of 4, what sample size (total) would I need to reject the claim if the two populations different by 0.5 (inches)?
1a) A claim has been made that only 5% of men in the U.S. play golf. As an avid golfer, I do not believe this claim. If I want to be 90% confident, and have 90% statistical power, what sample size would I need to disprove this claim if the true percentage of men playing golf is 8%? 1b) A claim has been made that men in the age group 20-30 average the same height in inches in the U.S. and the Netherland (the land of giants, by the way). I do not believe this claim. I want to be 99% confident and have 90% power. If I think both populations have a population standard deviation of 4, what sample size (total) would I need to reject the claim if the two populations different by 0.5 (inches)?
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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1a) A claim has been made that only 5% of men in the U.S. play golf. As an avid golfer, I do not believe this claim. If I want to be 90% confident, and have 90% statistical power, what
1b) A claim has been made that men in the age group 20-30 average the same height in inches in the U.S. and the Netherland (the land of giants, by the way). I do not believe this claim. I want to be 99% confident and have 90% power. If I think both populations have a population standard deviation of 4, what sample size (total) would I need to reject the claim if the two populations different by 0.5 (inches)?
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