In a test of the effectiveness of garlic for lowering cholesterol, 49 subjects were treated with raw garlic. Cholesterol levels were measured before and after the treatment. The changes (before minus after) in their levels of low-density lipoprotein (LDL) cholesterol (in mg/dL) have a mean of 0.4 and a standard deviation of 21.0 Use a 0.05 significance level to test the claim that with garlic treatment, the mean change in LDL cholesterol is greater than 0. a) Specify the null hypothesis, alternative hypothesis. b) Find the test statistic. c) Based on critical value(s), state the conclusion about the null hypothesis. d) State the final conclusion that addresses the original claim.
In a test of the effectiveness of garlic for lowering cholesterol, 49 subjects were treated with raw garlic. Cholesterol levels were measured before and after the treatment. The changes (before minus after) in their levels of low-density lipoprotein (LDL) cholesterol (in mg/dL) have a mean of 0.4 and a standard deviation of 21.0 Use a 0.05 significance level to test the claim that with garlic treatment, the mean change in LDL cholesterol is greater than 0. a) Specify the null hypothesis, alternative hypothesis. b) Find the test statistic. c) Based on critical value(s), state the conclusion about the null hypothesis. d) State the final conclusion that addresses the original claim.
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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In a test of the effectiveness of garlic for lowering cholesterol, 49 subjects were treated with raw garlic. Cholesterol levels were measured before and after the treatment. The changes (before minus after) in their levels of low-density lipoprotein (LDL) cholesterol (in mg/dL) have a mean of 0.4 and a standard deviation of 21.0 Use a 0.05 significance level to test the claim that with garlic treatment, the mean change in LDL cholesterol is greater than 0.
a) Specify the null hypothesis, alternative hypothesis.
b) Find the test statistic.
c) Based on critical value(s), state the conclusion about the null hypothesis.
d) State the final conclusion that addresses the original claim.
a) Specify the null hypothesis, alternative hypothesis.
b) Find the test statistic.
c) Based on critical value(s), state the conclusion about the null hypothesis.
d) State the final conclusion that addresses the original claim.
e) What do the results suggest about the effectiveness of the garlic treatment?
As a personal question added on, how do you know which test to use to find the test statistic, I always struggle with that?
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