(solution) A tele marketing company wants to know if sales go up as they

(solution) A tele marketing company wants to know if sales go up as they

A tele marketing company wants to know if sales go up as they call more people per dat but spend less time per call. The following is the data from nine randomly selcted days. The information is the number of calls the salesperson makes in a day and the  total amount of sales (in thousands of dollars).

Calls       25     29      33     37     43    48     52     55    67

Sales      3.7    4.2     4.2     5.0    4.7   5.3    4.9     5.6   5.9

a) Generate the estimated OLS line.

b.) Interpret the estimated slope coefficient from your line in part a.