In a random sample of 100 people, the correlation between the amount of daily exercise and weight was found to be -0.21. What would be the likely effect be on the absolute value of the correlation coefficient under the following circumstances? (Hint: would r be greater or smaller?) a. The sample is restricted to people who weighed less than 180 pounds. Would r get larger or smaller? b. The sample is restricted to people who get virtually no daily exercise versus those who exercise at least 30 minutes a day. Would r get larger or smaller? c. The mean sample weight is 150 pounds, and one person is added to the sample who weighs 275 pounds. Would r get larger or smaller