2 market

A small bookstore keeps data on the number of sales people working and the daily sales in thousands of dollars). The regression line is Sales = 751 +0.960 # of Sales People Working, and we can assume that the assumptions an conditions for regression are met Calculations with technology find that se = 1 247 and SE (61) = 0.0737 Complete parts a through b Click the icon to view the data table of the number of people working and sales a) Find The pre - X Table of number of people working and sales. (Round Number of Sales People Working 2 3 7 9 10 10 12 15 16 20 Sales (in $1000) 9 11 13 18 17 18 17 23 22 27 x= 10.4 SD(x)=5.64 y=175 SD(y)=5.54 Print Done Get wer a) Find the predicted sales on a day with 500 employees working The predicted sales are thousand dollars (Round to one decimal place as needed.) b) Is this prediction likely to be useful? Choose the correct answer below. O A. No, because the extrapolation is so far from the given data that it is unlikely the model will remain accurate, OB. Yes, because the standard error is low so the model is a good fit. O C. Yes, because the data appear to be linear so the behavior should remain linear D. No, because the model does not give enough accuracy to make an accurate prediction