Refer to the previous exercise.
a. For the null hypothesis, H0: μ1 = μ2, show that t = 2.62 and the two-sided P-value = 0.059. Interpret.
b. What decision would you make in the test, using a
(i) 0.05 and
(ii) 0.10 significance level?
Explain what this means in the context of the study.
c. Suppose the researcher had predicted ahead of time that Therapy 1 would be better. To which Ha does this correspond? Report the P-value for it, and make a decision with significance level 0.05.