A previous student of this class was curious about the relationship between number of hours a person slept before an exam and the number of correct answers on the exam. She asked a sample of 5 people from her residence hall the number of hours they slept before and the number of correct answers they got on their first exam. Below is the data. Take answers to at least 2 decimal places. Number of hours slept (X) Number of correct answers (Y) 10 12 a. EX= b. EX2= C. EY= d. EY2= e. EXY= f. Calculate Pearson's correlation coefficient. g. Interpret r: Include type and strength of the relationship. h. Calculate the coefficient of determination 1. What percent of the variability in the number of correct answers is accounted for by the number of hours slept? J. What percent of the variability in the number of correct answers is unaccounted for by the number of hours slept? k. What is the criterion variable? 1. What is the predictor variable? m. Calculate the slope b= n. Calculate the y-intercept a= O. Write the regression equation. p. Predict the number of correct answers for a student who slept 7 hours. q. Calculate the standard error of the estimate and interpret. Focus