19 PM Tue Aug 2 ... D Question 7 Take Quiz 1 pts Compute the linear correlation coefficient between the two variables and determine whether a linear relation exists. The table below shows the scores on an end-of-year project of 10 randomly selected architecture students and the number of days each student spent working on the project. Days, 4 6 3 9 3 5 5 6 7 4 X Score, 68 83 63 75 69 81 62 93 79 74 The r critical value is 0.632. r = 0.761 ; no linear relation exists O r = 0.761 ; linear relation exists r = 0.483 O ; no linear relation exists r = 0.847 ; no linear relation existsPM Tue Aug 2 ... Take Quiz ; no linear relation exists Question 8 1 pts Use the given data to find the equation of the regression line. Round the final values to three significant digits, if necessary. Managers rate employees according to job performance and attitude. The results for several randomly selected employees are given below. Performance 64 59 63 65 69 58 77 76 69 70 Attitude 78 72 67 78 82 75 87 92 83 87 y = 11.7 + 1.02x O y = 2.81 + 1.35x O y = 92.3 - 0.669x y = -47.3 + 2.02x OM Tue Aug 2 ... Take Quiz Question 9 1 pts Use the following information to answer the question. The following linear regression model can be used to predict ticket sales at a popular water park. Let S be the ticket sales per hour and T be the current temperature in OF. S = -631.25 + 11.25T What is the predicted number of tickets sold per hour if the temperature is 79F? Round to the nearest whole ticket. O About 310 tickets About 255 tickets About 250 tickets About 258 tickets