2. Researchers who measure reaction time for human subjects often observe a negative relationship between the reaction time scores and the number of errors that the subjects commit.This relationship is known as the speed-accuracy trade-off.The following data are from a reaction time study where the researcher recorded the average reaction time (milliseconds) and the total number of errors for each individual in a sample of n = 8 subjects.

Subject Reaction Time (X) Errors (Y)

A 184 10

B 213 6

C 234 2

D 197 7

E 189 13

F 221 10

G 237 4

H 192 9

Calculate the Pearson Product-Moment Correlation Coefficient, following completely the Handout given.a. Once you find the regression equation, what would be the predicted number of errors for a reaction time of 180 milliseconds?b. For a reaction time of 250 milliseconds?