A textbook publisher for books used in business schoolsbelieves that the number of books sold is related to the number ofcampus visits to decision makers made by their sales force. Asampling of the number of sales calls made and the number of bookssold is shown in the following table.
# OF SALES CALLS MADE ----- # OF BOOKS SOLD
25 375
15 250
25 525
45 825
35 550
25 575
25 550
35 575
25 400
15 400
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Sales Calls Made Versus Number of Books SoldSummary
Measure Value
Error Measures
Cummulative For. Error = 0
MAD = 72.5
MSE = 5550.986
Standard Error (denom=n=8) = 83.299
MAPE = 0.163
Regression Line
Books Sold = 104,605
+ 14.737 * Sales Calls Made
Statistics
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1. What percent in the variation of the variable BooksSold is explained by the value of the variable Sales CallsMade?
A) 86.5%
B) 83.3%
C) 74.8%
D) 72.5%
2. For every sale call made, the number of books soldincreases by:
A) 14.74 books.
B) 104.6 books.
C) 83.30 books.
D) 7.25 books.
3. If a sales representative makes 55 sales calls, thenumber of book sales the publisher should expect is:
A) 105.
B) 4,581.
C) 114.
D) 915.
4. To realize the sale of 700 books, how many salescalls will the sales representative have to make?
A) 40.4
B) 45.9
C) 32.7
D) 37.6
Please provide explantions and/or show your work.
