Suppose "D" represents demand for a product and "p" represents price of the product. Suppose the following prediction equation for demand was found based on data:
??^= ????-1.25
"??" is some constant.
a) What is the interpretation of-1.25?
b) Suppose price were to change from $50 to $53, what is the expected change in demand? (Hint: Use the interpretation from part (a).)