Q.96 - The Practice of Statistics for AP

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.

Step-by-Step Solution

Answer

The value test to test a hypothesis about the mean population on the basis of a sample mean is meaningless.

Step-1 Given Information

Given In the question that,  Ages of president Joe is working on a paper about American presidents' backgrounds. He researches the ages of all the presidents at the time they took office. Joe utilizes these numbers to do a significance test on the average age of all US presidents because he took a statistics course we have to explain why this makes no sense .

Step-2 Explanation

There is the information needed about each subject in the population and then it will determine the mean population. If it already knows the mean population, so a value test to test a hypothesis about the mean population on the basis of a sample mean is meaningless.