Question

Ages of presidents Joe is writing a report on the backgrounds of American presidents. He looks up the ages of all the presidents when they entered office. Because Joe took a statistics course, he uses these numbers to perform a significance test about the mean age of all U.S. presidents. Explain why this makes no sense.

Short answer

This mean age is required to perform a significance test.

Step-by-step solution

Given information

Joe is researching the backgrounds of American presidents for a report, and he checks up the ages of all presidents at the time they took office.

Calculation

There is no average age at which presidents should be expected to be the same. To do a significance test, you'll need this average age.