The managers of a brokerage firm are interested in finding out if the number of clients a broker brings into the firm affects the sales generated by the broker. They sampled 12 brokers and determined the number of new clients they have enrolled in their lat year and their sales amount in thousands of dollars.

Clients (X)	Sales (Y)
27	52
11	37
42	64
33	55
15	29
15	34
25	58
36	59
28	44
30	48
17	31
22	38

The estimated equation of the line is

Select one:

A. Y(hat)=17.7+1.12X

B. Y(hat)=-17.7+1.12X

C. Y(hat)=17.7-1.12X

D. Y(hat)=-17.7-1.12X

The Coefficient of Determination is:

Select one:

A. 0.8858

B. 0.7631

C. 0.7846

D. 0.5

The correlation coefficient for this data set is

Select one:

A. -0.7846

B. -0.8858

C. 0.7846

D. 0.8858