Miniproject #6 Correlation and Regression 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 the},r got on their rst exam . Below is the data . Take answers to at least 2 decimal places . Number of hours slept {K} Number of correct answers {Y} El '3' 11 ll] 4 2 9 11 5 9 a -2x= as b - EX 2: 335 C. EY = 39 d - BY 2: 355 61- not = 334 f' Calculate Pearson's correlation coefficient. 9 rInterpret r: Include type and strength of the relationship h " Calculate the coefficient of determination I- 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 ? I- What is the predictor variable ? m - Calculate the slope b= n - Calculate the yintercept a= 0- Write the regression equation. P - Predict the number of correct answers for a student who slept 8 hours . q - Calculate the standard error of the estimate and interpret