Only contains only parts b$,$ c$,$ and d$.$

b$)$ Using the least$-$squares regression method, the equation for forecasting is $($round your responses to four decimal places$)$:

y$=+\backslash$times

c$)$ The estimate for guitar sales if Maroon $5$ performed on TV $11$ times $=$ sales $($round your response to two

decimal places$).$

d$)$ The correlation coefficient $($r$)$ for this model $=($round your response to four decimal places$).$

The coefficient of determination $(7)$ for this model $=($round your response to four decimal places$).$

The percentage of variation in sales that can be explained by TV appearances $=$ Mark Gershon, owner of a musical instrument distributorship, thinks that demand for guitars may be related to the

number of television appearances by the popular group Maroon $5$ during the previous month. Gershon has collected the

data shown in the following table:

This exercise contains only parts $b,c,$ and $d.$

b$)$ Using the least$-$squares regression method, the equation for forecasting is $($round your responses to four decimal

places$)$:

$Y=,+,x\%($round your response to two

decimal places$).$