Aregression model relating x, number of salespersons at a branch office, to y, annual sales at the office (in thousands of dollars) provided the following computer output from a regression analysis of...

Aregression model relating x, number of salespersons at a branch office, to y, annual sales
at the office (in thousands of dollars) provided the following computer output from a regression
analysis of the data.

Y=80+50x

regression SS -6828.6

residual SS-2298.8

total SS-9127.4

a. Write the estimated regression equation.
b. How many branch offices were involved in the study?
c. Compute the F statistic and test the significance of the relationship at a .05 level of
significance.
d. Predict the annual sales at the Memphis branch office. This branch employs 12
salespersons.