Researchers studying obesity wanted to compare the effectiveness of dieting with exercise to dieting without exercise. 73 patients were randomly divided into two groups. Group 1, composed of 37 patients, was put on a dieting program with exercise. Group 2, composed of 36 patients, dieted only. The results for weight loss, after 2 months are summarized in the following table. Diet with exercise group X1 = 7.6 kg S1 = 1.5876 kg Diet only group X2 = 7.8 kg s2 = 2.3587 kg %3D a) At the 0.05 significance level, determine whether there is a difference between the two groups. b) Find the 99% confidence interval of the difference in means.

Researchers studying obesity wanted to compare the effectiveness of dieting with exercise to dieting without exercise. 73 patients were randomly divided into two groups. Group 1, composed of 37 patients, was put on a dieting program with exercise. Group 2, composed of 36 patients, dieted only. The results for weight loss, after 2 months are summarized in the following table. Diet with exercise group X1 = 7.6 kg S1 = 1.5876 kg Diet only group X2 = 7.8 kg s2 = 2.3587 kg %3D a) At the 0.05 significance level, determine whether there is a difference between the two groups. b) Find the 99% confidence interval of the difference in means.

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

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.6: Summarizing Categorical Data

Problem 10CYU

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