Question 7 0/2 pts 9 3 99 0 Details A regression was run to determine if there is a relationship between hours of TV watched per day (x) and number of situps a person can do ( y ) . The results of the regression were: y=ax+b a= - 1.3 b=20 . 103 2=0. 874225 r=-0. 935 Use this to predict the number of situps a person who watches 12 hours of TV can do (to one decimal place)Question 4 0/2 pts 5 3 99 0 Details Annual high temperatures in a certain location have been tracked for several years. Let X represent the year and Y the high temperature. Based on the data shown below, calculate the correlation coefficient (to three decimal places) between X and Y. Use your calculator! X y 3 21.7 4 18.59 5 18.28 6 19.57 7 18.96 8 19.15 9 18.44 10 18.83 11 18.32 12 15.31 13 16.2 r =0 Question 2 v E1 on pts '0 3 8 99 (D Details Annual high temperatures in a certain location have been tracked for several years. Let X represent the year and Y the high temperature. Based on the data shown below, calculate the regression line (each value to two decimal places)