Question: Does social rejection hurt? Exercise 4.40 (page 114) gives data from a study that shows that social exclusion causes "real pain". That is, activity in an area of the brain that responds to physical pain goes up as distress from social exclusion goes up. A scatterplot shows a moderately strong linear relationship. Figure 5.10 below shows the regression output from software for these data

1. What is the equation of the least-.squares regression line Cot predicting brain activity from social distress score? Use the equation to predict brain activity for a social distress score 2.0.
2. What percent of the variation in brain activity among these subjects is explained by the straight-line relationship with social distress score?

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