Treatment Placebo μ μ1 μ2 n 31 34 x 2.31 2.62 s 0.99 0.69 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...

Treatment	Placebo
μ	μ1	μ2
n	31	34
x	2.31	2.62
s	0.99	0.69

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. Complete parts (a) and (b) below. Use a 0.05 significance level for both parts.

a.What are the null and alternative hypotheses?

The test statistic, t, is

The P-value is

State the conclusion for the test.

b. Construct a confidence interval suitable for testing the claim that the two samples are from populations with the same mean.

Jun 07, 2022

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Treatment Placebo μ μ1 μ2 n 31 34 x 2.31 2.62 s 0.99 0.69 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...

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