Q1) In working for local retail store you have developed following estimated regression equation:
y = 22,167 - 412 x1 +818x2 - 93 x3 - 71x4
where:
y= weekly sales
x1= local unemployment rate
x2= weekly average high temparture
x3= number of activities in the local community
x4= average gasoline price
a) Interpret values of b1, b2, b3 and b4 in this estimated regression equation
b) Determine the estimater sales if unemployment rate is 5.7%, average high temperature is 61, there were 14 activities and gasoline average price was $1.39?