The table below shows the number of cars sold last month by seven employees at Concord Motors and their number of years of sales experience. Experience Sales 18 6 7 14 1 2 2 4 5 6 8 19 13 10 Management would like to use simple regression analysis to estimate monthly car sales using the number of years of sales experience. The 95% prediction interval that estimates the monthly sales for an employee with 5 years of experience is (5.79, 14.73) (2.64, 17.82) (4.23, 16.23) O (7.72, 12.73)

Step 1: Define the formula of the prediction interval

Step 2: Obtain the regression equation

Step 3: Obtain the 95% prediction interval that estimate monthly sales for an employee of 5 yrs experience.

Solution