The Internet Find an Internet source that reports on a study and describes the data. Print out the description and answer the same questions as for Exercises 7–10. (Exercises 13–20) For each...

The Internet Find an Internet source that reports on a study and describes the data. Print out the description and answer the same questions as for Exercises 7–10. (Exercises 13–20) For each description of data, identify Who and What were investigated and the Population of interest.

Exercises 7–10

Stress A medical researcher measures the increase in heart rate of patients under a stress test. What kind of variable is the researcher studying?