MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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I want to know if I calculated the amount of boys required to ensure a two-sided test of hypothesis has 80% power to detect a difference in BMI of 2 units? This is my question #1 of my homework. Thank you.

HLTH 501 WEEK 4 PROBLEMS 30 POINTS 10 ponts per problem. 1. The mean body mass index (BMI) for boys age 12 is 23.6. An investigator wants to test if the BMI is higher in 12-year-old boys living in New York City. How many boys are needed to ensure that a two-sided test of hypothesis has 80% power to detect a difference in BMI of 2 units? Assume that the standard deviation in BMI is 5.7. (21 5.29 ES 2. Alpha05 ES =
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Transcribed Image Text:HLTH 501 WEEK 4 PROBLEMS 30 POINTS 10 ponts per problem. 1. The mean body mass index (BMI) for boys age 12 is 23.6. An investigator wants to test if the BMI is higher in 12-year-old boys living in New York City. How many boys are needed to ensure that a two-sided test of hypothesis has 80% power to detect a difference in BMI of 2 units? Assume that the standard deviation in BMI is 5.7. (21 5.29 ES 2. Alpha05 ES =
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