A candy bar manufacturer is interested in trying to estimate how sales are influenced by the price of their product. To do this, the company randomly chooses 5 small cities and offers the candy bar at different prices. Using candy bar sales as the dependent variable, the company will conduct a simple linear regression on the data below:

City price($) sales

River city 1.3 100

Hudson 1.6 90

Ellsworth 1.8 90

prescott 2.0 40

Rock film 2.4 38

1,what is the estimated mean change in the sales of the candy bar if the price goes up by $ 1?

2,what is the cosfficient of correlation for this data?

3,what is the percentage of the total variation in candy bar sales explained by the regression model?

4,if the price of the candy bar is set @ $2 the estimated sales will be?

5,the estimated slope parameter for candy bar price and sales data?