need help pls,

QUESTION 1 The following data shows, online advertising expenditure and the online-sales for 7 online stores Online Store Online Advertising Dollars (1000 s) Monthly E-commerce Sales 1000s of dollars 1.7 368 1.5 340 2.8 665 5 954 1.3 331 2.2 556 1.3 376 source http://intellspot.com/linear-regression-examples/ Use your calculator to find the slope of the regression line with online advertising dollars as the explanatory variable, round your answer to two digits after the decimal sign.QUESTION 2 The following data shows, online advertising expenditure and the online-sales for 7 online stores Online Store Online Advertising Dollars (1000 s) Monthly E-commerce Sales 1000s of dollars 1.7 368 1.5 340 2.8 665 5 954 1.3 331 2.2 556 1.3 376 source http://intellspot.com/linear-regression-examples/ Use the regression line to predict the sales to the nearest dollar if the online advertising is $4000.QUESTION 3 The data displayed below shows t , WT: weight in pounds and WAIST: waist circumference in cm for 40 males. A descriptive statistics is given below. WT 1610.1 144.2 179.3 175.8 152.6 100.8 135.0 2131.5 175.2 139.0 156.3 185.0 191.1 151.3 209.1- 237.1 175.7 220.6 165.1 137.4 WAIST 00.5 71. 1 \".5 07.7 87. I 92.4 73.3 103.3 30. I 32.5 35.7 103.3 91 .8 75.6 105.5 103.7 104.0 103.0 91 .3 75.2 WT 104.2 162.4 151 .3 144.1 204.6 193.3 172.9 191.9 17-1-3 160.3 213.3 198.0 173.3 214.5 137.1 1195 139-1 164.7 170.1 151 .0 WNST 3-7.7 77.0 8-5.0 79.6 103.8 103.0 07.1 80.9 30.0 91.5 102.5 96.1 93.9 107.5 01.6 75.7 95.0 91.1 94.0 79.9 Statistic WT WAIST Mean 172.5 91.29 Standard Deviation 20.33 9.862 Sample Size 40 Correlation 0.359 Use the descriptive statistics to find the slope of the regression line with WT as the explanatory variable. Round your answer to three digits after the decimal sign