# A popular theory is that presidential candidates have an advantage if they are taller than their main

## Question:

"Presidents").

a. Use the sample data with a 0.05 significance level to test the claim that for the population of heights of presidents and their main opponents, the differences have a mean greater than 0 cm.

b. Construct the confidence interval that could be used for the hypothesis test described in part (a). What feature of the confidence interval leads to the same conclusion reached in part (a)?

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**Related Book For**

## Mathematical Interest Theory

**ISBN:** 9781470465681

3rd Edition

**Authors:** Leslie Jane, James Daniel, Federer Vaaler