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A random sample of 15 cigarettes was tested and was found to have a mean nicotine of 42.6 mg and a standard deviation of 3.7 mg. Assume that nicotine contents follow a normal distribution and a 5% level of significance. Test the claim of the tobacco company that its best-selling cigarettes contain b. less than 40 mg of nicotine. Test statistics = p value Do we have enough evidence to reject the null hypothesis? YES OR NO?

A random sample of 15 cigarettes was tested and was found to have a mean nicotine of 42.6 mg and a standard deviation of 3.7 mg. Assume that nicotine contents follow a normal distribution and a 5% level of significance. Test the claim of the tobacco company that its best-selling cigarettes contain b. less than 40 mg of nicotine. Test statistics = p value Do we have enough evidence to reject the null hypothesis? YES OR NO?

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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A random sample of 15 cigarettes was tested and was found to have a mean nicotine of 42.6 mg and a standard deviation of 3.7 mg. Assume that nicotine contents follow a normal distribution and a 5% level of significance. Test the claim of the tobacco company that its best-selling cigarettes contain b. less than 40 mg of nicotine. Test statistics = p value Do we have enough evidence to reject the null hypothesis? YES OR NO?
Transcribed Image Text:A random sample of 15 cigarettes was tested and was found to have a mean nicotine of 42.6 mg and a standard deviation of 3.7 mg. Assume that nicotine contents follow a normal distribution and a 5% level of significance. Test the claim of the tobacco company that its best-selling cigarettes contain b. less than 40 mg of nicotine. Test statistics = p value Do we have enough evidence to reject the null hypothesis? YES OR NO?
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