Question

Question 1. We would like to test the null hypothesis that the treatment (HRT) has no effect on the outcome (CHD), against the alternative hypothesis that the treatment does have an effect. What would be a good test statistic

Answer 1

Pearson's r test or Pearson's t- test

Explanation:

The null hypothesis is that there is no effect on the outcome against the claim that there is some effect. The Greek letter rho is used to denote the parameter.This test can also be two tailed or one tailed depending on the direction of the parameter.

This test is used for qualitative variables.

H0: ρ= 0 against Ha : ρ≠0

It is possible to use Pearson's r test to find the t- test and do the calculations.