Bookstore sales revisited Recall the data we saw in
Chapter 6, Problem 5E(choose chapter or problem)
Bookstore sales revisited Recall the data we saw in Chapter 6, exercise 3 for a bookstore. The manager wants to predict Sales from Number of Sales People Working.
a) Find the slope estimate, \(b_1\).
b) What does it mean, in this context?
c) Find the intercept, \(b_0\).
d) What does it mean, in this context? Is it meaningful?
e) Write down the equation that predicts Sales from Number of Sales People Working.
f) If 18 people are working, what Sales do you predict?
g) If sales are actually $25,000, what is the value of the residual?
h) Have we overestimated or underestimated the sales?
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