A researcher is interested in investigating whether BMI changes in males aged 55-65 years after spending four weeks on a novel diet and exercise program. The researcher plans to take BMI measurements on a random sample of men before and after the intervention and see whether a novel diet and exercise help to reduce the BMI. How many subjects should be involved in the study to ensure that the test has 80% power to detect a mean difference (BMI) of 1.0? Assume that the standard deviation for the change is approximately 5.

A researcher is interested in investigating whether BMI changes in males aged 55-65 years after spending four weeks on a novel diet and exercise program. The researcher plans to take BMI measurements on a random sample of men before and after the intervention and see whether a novel diet and exercise help to reduce the BMI. How many subjects should be involved in the study to ensure that the test has 80% power to detect a mean difference (BMI) of 1.0? Assume that the standard deviation for the change is approximately 5.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter4: Equations Of Linear Functions

Section4.5: Correlation And Causation

Problem 11PPS

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