For one study, researchers had college students repeatedly play a version of the game "prisoner's dilemma," where competitors choose cooperation, defection, or costly punishment. At the conclusion of the games, the researchers recorded the average pay off and the number of times punishment was used for each player. Based on a scatterplot of the data, the simple linear regression relating average payoff (y) to punishment use (x) resulted in SSE = 1.

For one study, researchers had college students repeatedly play a version of the game "prisoner's dilemma," where competitors choose cooperation, defection, or costly punishment. At the conclusion of the games, the researchers recorded the average pay off and the number of times punishment was used for each player. Based on a scatterplot of the data, the simple linear regression relating average payoff (y) to punishment use (x) resulted in SSE = 1. Complete parts a and b below. . . . a. Assuming a sample size of n = 27, compute the estimated standard deviation of the error distribution, s. S = (Type an integer or a decimal.) b. Give a practical interpretation of s. Select the correct choice below and fill in the answer box within your choice. (Round to one decimal place as needed.) A. Most (about 95%) of the errors of prediction will fall within unit(s) of the least squares line. O B. No error of prediction will fall more than unit(s) away from the least squares line. O C. The prediction error for the average payoff is unit(s). O D. The mean prediction error is unit(s)