Question

16 of 0 2 complete) This T The table below shows the number of cars sold per month last year and the number of years of sales experience for six randomly selected employees of Concord Motors Experience years) Sales number of cars) 8 2 16 4 14 5 15 7 25 31 O A. 13 OB. 14 OC. 15 OD. 16 O E. None of the above Find the equation of the least squares regression line and use it to predict the number of cars sold per month for a salesperson with 3 years of sales experience (Round to the nearest whole number) Click to select your answer O Type here to search E W 26 & 2 3 6 7 8

Answer 1

Question is answered below.

Experiens sales 2 dx dy dr dy. andy - 9 30 2 -2 4 4 8 16 14 IS 4 O 16 9 - - 10 -24 -4. - 3 719 13125 48 -3 21 5 7 9 78 3 25 31 49 169 347 65 109 - 4 x 28 x 4.667 G Assumed Mean A = 4 y 10g - 18.167 6 Assumed Mean A 78 da = X - AM da= x- 4 dy = y-18 Line of Regression Y On X is (Y-%) = byx (x-7) "Ay Y- Ay

where byna on Edludy-1 Edu) (Edy {{dx² - (Edu n Чx | pya = 6 X 117 698 6x48 (42 272. 2-566 sint of Reg. Y On X is (Y-0 18.167) = 2.566 ( X – 46667) - Y = 2-5664 11.975 + 18.167 Y = 2.5668 + 6.192. NOW X - 3. put ya 2566 (3) t 6.192 y = 13.89 = 14 ophan B 14