Suppose that, at your 60th high school reunion, you gather together the class photos and relate your classmates' facial expressions to their mortality rates.Based on the study of baseball players, what would you expect to find?

Question

Quizplus · Accepted Answer

The study of baseball players showed that those with big smiles in their yearbook photos lived an average of 7 years longer than those with no smiles, and those with partial smiles lived an average of 4.5 years longer. Therefore, we could expect to find that students with big smiles had the longest lifespans, followed by those with partial smiles, and then by those with no smiles.

Suppose That, at Your 60th High School Reunion, You Gather