5.5.2 - Single Mean Example: Height

Research question: On average, are husbands older than their wives?

Step 1: The data are paired by couple. This is a paired means test.

$$H_0: \mu_d=0$$

$$H_a: \mu_d > 0$$

Step 2: We constructed a randomization distribution in StatKey using the built in dataset.

Step 3: $$p < 0.001$$

Step 4: Reject the null hypothesis

Step 5: There is evidence that in the population, on average, husbands are older than their wives.