An experiment conducted by the owner of eight Giordano's franchises has the below data on the number of Happy Meals sold at each franchise during a...

An experiment conducted by the owner of eight Giordano's franchises has the below data on the number of Happy Meals sold at each franchise during a week of the pricing experiment.

(i)What is the variance when mean = 500

(ii) if variance = 2 and mean E(salesi) = 500 - (60 * pricei). What would be the estimate for variance?

what is the correlation between price and sales.