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A sample of n=28 individuals is randomly selected from a population with a mean of µ=...

A sample of n=28 individuals is randomly selected from a population with a mean of µ= 63, and a treatment is administered to the individuals in the sample. After treatment, the sample mean is found to be M=68.
a. If the sample variance = 96, are the data sufficient to reject the null and conclude that the treatment has a significant effect using a two-tailed test with alpha = .05? Be sure to show all formulas with symbols (and plug in numbers), steps, processes and calculations for all parts of all answers above (including how you arrived at the critical value).  

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orchestra answered 2 years ago
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