ol_._._._._._._ 0 20 40 60 30 100 120 Hours Spent Studying - Select your answer - v What does the scatter chart indicate about the relationship between hours spent studying and total points earned? The scatter chart indicates there may be a linear relationship between hours spent studying and total points earned. Students who spend more time studying generally earn more points, and this scatter chart is consistent with what is expected. (b) Develop an estimated regression equation showing how total points earned is related to hours spent studying. What is the estimated regression model? Let x represent the hours spent studying. If required, round your answers to three decimal places. For subtractive or negative numbers use a minus sign even if there is a + sign before the blank. (Example: -300) y = 0.8014: + 8.6742 x (c) Test whether each of the regression parameters Ba and B1 is equal to zero at a 0.01 level of signicance. What are the correct interpretations of the estimated regression parameters? Are these interpretations reasonable? The input in the box below will not be graded, but may be reviewed and considered by your instructor. blank 4 (d) How much of the variation in the sample values of total point earned does the model you estimated in part (b) explain? If required, round your answer to two decimal places. 82.77 % (e) Mark Sweeney spent 80 hours studying. Use the regression model you estimated in part (b) to predict the total points Mark earned. If required, round your answer to the nearest whole number. Do not round intermediate calculations. $ (a) Choose a scatter chart below with Hours Spent Studying as the independent variable. (i) 120 100 Total Points Earned 80+ 60+ 40+ 20+ + 0 20 40 60 80 100 120 Hours Spent Studying (ii) 120 Total Points Earned 100 80+ 60+ 40+ 20+ 20 40 60 80 100 120 Hours Spent StudyingHours Spent Studying (iii) 120 Total Points Earned 100 80+ 60+ 40+ 20+ 0- 20 40 60 80 100 120 Hours Spent Studying (iv) 120 Total Points Earned 100 80+ 60+ 40+ 20+ 0+ 20 40 60 80 100 120 Hours Spent Studying