A classmate has estimated that life expectancy worldwide is probably 72 years. In order to test this, you identify a dataset created by the United Nations that tracks average life expectancy, income,

Posted: December 30th, 2021

A classmate has estimated that life expectancy worldwide is probably 72 years. In order to test this, you identify a dataset created by the United Nations that tracks average life expectancy, income, and educational attainment across countries. Open the attached file on named “Human Development” and identify the life expectancy variable. You will use this data as your sample to test the hypothesis: Average life expectancy worldwide is 72 years old.
Recall the steps to hypothesis testing:
1) Establish a null and alternate hypothesis