From the regression equation: y = 100 – 8.00X where y is number of donuts sold and x is price. So on an average, if price increases by one dollar, the number of donuts sold decrease by how many?

Answer 1

In the regression equation \( y = 100 - 8.00X \), where \( y \) is the number of donuts sold and \( X \) is the price, the coefficient of \( X \) (which is -8.00) indicates the relationship between price and the number of donuts sold.

This means that for each one dollar increase in price (the value of \( X \) increases by 1), the number of donuts sold \( y \) decreases by 8.00.

Therefore, if the price increases by one dollar, the number of donuts sold decreases by 8 donuts on average.