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A manufacturer claims that drinking a particular type of tea daily will reduce the weight of a population by 12% over a fixed period. 70 people were recruited from the population to test the manufacturer's claim. The weight of each participant was measured at the start and the end of the study. The mean weight loss of the participants was found to be 8.1% with a standard deviation of 6.5%. Is the manufacturer's claim valid at a 1% level of significance? State clearly: (c) i. the null hypothesis and the alternative hypothesis, ii. whether a one-tailed or two-tailed test should be used and why, ii. which distribution table should be used and why, and iv. the degrees of freedom.

A manufacturer claims that drinking a particular type of tea daily will reduce the weight of a population by 12% over a fixed period. 70 people were recruited from the population to test the manufacturer's claim. The weight of each participant was measured at the start and the end of the study. The mean weight loss of the participants was found to be 8.1% with a standard deviation of 6.5%. Is the manufacturer's claim valid at a 1% level of significance? State clearly: (c) i. the null hypothesis and the alternative hypothesis, ii. whether a one-tailed or two-tailed test should be used and why, ii. which distribution table should be used and why, and iv. the degrees of freedom.

MATLAB: An Introduction with Applications
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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(c) A manufacturer claims that drinking a particular type of tea daily will reduce the weight of a population by 12% over a fixed period. 70 people were recruited from the population to test the manufacturer's claim. The weight of each participant was measured at the start and the end of the study. The mean weight loss of the participants was found to be 8.1% with a standard deviation of 6.5%. Is the manufacturer's claim valid at a 1% level of significance? State clearly: i. the null hypothesis and the alternative hypothesis, ii. whether a one-tailed or two-tailed test should be used and why, iii. which distribution table should be used and why, and iv. the degrees of freedom.
Transcribed Image Text:(c) A manufacturer claims that drinking a particular type of tea daily will reduce the weight of a population by 12% over a fixed period. 70 people were recruited from the population to test the manufacturer's claim. The weight of each participant was measured at the start and the end of the study. The mean weight loss of the participants was found to be 8.1% with a standard deviation of 6.5%. Is the manufacturer's claim valid at a 1% level of significance? State clearly: i. the null hypothesis and the alternative hypothesis, ii. whether a one-tailed or two-tailed test should be used and why, iii. which distribution table should be used and why, and iv. the degrees of freedom.
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