A service data on the body mass index of 654 young women the mean body mass index in the sample was X bar equals 26.8 service data on the body mass index of 654 young women the mean body mass index. We treated these data as an SRS from a normal distribution population with a standard deviation of 7.5 A. given 3 confidence intervals for the mean BMI in the population using 90 95 and 99% confidence. B. What are the margins of air for 90, 95 and 99% confidence? how does increasing the confidence level change the margin of error of a confidence interval when the sample size and population standard deviation remain the same

A service data on the body mass index of 654 young women the mean body mass index in the sample was X bar equals 26.8 service data on the body mass index of 654 young women the mean body mass index. We treated these data as an SRS from a normal distribution population with a standard deviation of 7.5 A. given 3 confidence intervals for the mean BMI in the population using 90 95 and 99% confidence. B. What are the margins of air for 90, 95 and 99% confidence? how does increasing the confidence level change the margin of error of a confidence interval when the sample size and population standard deviation remain the same

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

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.3: Measures Of Spread

Problem 26PFA

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Question

A. given 3 confidence intervals for the mean BMI in the population using 90 95 and 99% confidence.

B. What are the margins of air for 90, 95 and 99% confidence? how does increasing the confidence level change the margin of error of a confidence interval when the sample size and population standard deviation remain the same

Definition Definition Number of subjects or observations included in a study. A large sample size typically provides more reliable results and better representation of the population. As sample size and width of confidence interval are inversely related, if the sample size is increased, the width of the confidence interval decreases.

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