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

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

Step-by-step 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.

assuming this is from a math graphing problem.

7 would be on the x-axis which is the horizontal line on the graph

84 would be on the y-axis which is the vertical line on the graph