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A study was done using a treatment group and a placebo group. The results are shown...

A study was done using a treatment group and a placebo group. The results are shown in the table. Assume that the two samples are independent simple random samples selected from normally distributed​ populations, and do not assume that the population standard deviations are equal. Use a 0.01 significance level.

Treatment Placebo

Mean Mean 1 Mean 2

N 31 36

X 2.38 2.66

S 0.88 0.57

What are the null and alternative hypothesis?

What is the test statistic?

What is the p-value?

What is the conclusion?
Math   Statistics-And-Probability   
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