Use a two-tailed independent sample t-test to answer this question. A new drug is being tested...

Use a two-tailed independent sample t-test to answer this question. A new drug is being tested to see if it reduces the number of backaches. Do these samples of number of monthly backaches from eight volunteers who are taking the drug and eight who are not taking the drug show a significant reduction in the mean number of monthly backaches (α= 0.05)? Identify the hypothesis statements, test statistic, p-value, and your decision. Also, construct and report the 95% confidence interval for each group. Analyze the confidence intervals - Do you come to the same conclusion as the t-test results? Why or why not?

New Drug Group: 4 4 3 5 4 5 4 6

Control Group: 5 6 6 6 8 6 6 7

Solutions

Expert Solution

The confidence intervals of the two groups do not overlap and the endpoints of the confidence interval of control group is greater than that of the new drug group. This shows that the mean number of backaches is reduced in the new drug group.

Any query please comment below.

orchestra answered 1 year ago

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