Data from a small bookstore are shown in the accompanying table. The manager wants to predict Sales from Number of Sales People Working.

a) Find the slope estimate, b1. Use technology or the formula b1=rs_y/s_x.

Round to 3 decimal places.

b₁=

b) What does b₁ mean in this context?

c) Find the intercept b₀

d) What does b₀mean in this context? Is it meaningful?

e) Write the equation that predicts the Sales from Number of Sales People Working

X Data Table Number of sales people working Sales (in $1000) 10 12 14 15 11 19 1 12 21 13 17 22 20 26 X = 10.5 y = 18.2 SD(X) =5.44 SD(y) =5.16