A sample of n=25 individuals is randomly selected from a population with a mean of p=65, and a treatment is administered to the individuals in the sample. After treatment, the sample mean is found to be 70. If the sample standard deviation is s=20, what is your conclusion using a two-tailed test with alpha level of 0.05? a. Reject the null hypothesis O b. Fail to reject the null hypothesis O c. Accept the null hypothesis O d. None of the above

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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A sample of n=25 individuals is randomly selected from a population with a mean of u=65,
and a treatment is administered to the individuals in the sample. After treatment, the
sample mean is found to be 70. If the sample standard deviation is s=20, what is your
conclusion using a two-tailed test with alpha level of 0.05?
a. Reject the null hypothesis
O b. Fail to reject the null hypothesis
O c. Accept the null hypothesis
O d. None of the above
Transcribed Image Text:A sample of n=25 individuals is randomly selected from a population with a mean of u=65, and a treatment is administered to the individuals in the sample. After treatment, the sample mean is found to be 70. If the sample standard deviation is s=20, what is your conclusion using a two-tailed test with alpha level of 0.05? a. Reject the null hypothesis O b. Fail to reject the null hypothesis O c. Accept the null hypothesis O d. None of the above
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