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:

$$

Maroon $5$ TV Appearances

Demand for Guitars

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

Part $2$

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

$Y=,+1\mathrm{.}1522x$

c$)$ The estimate for guitar sales if Maroon $5$ performed on TV $11$ times $=12\mathrm{.}48$ 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 $(r^2)$ for this model $=0\mathrm{.}5452($round your response to four decimal places$).$

The percentage of variation in sales that can be explained by TV appearances $=54\mathrm{.}52\%($round your response to two decimal places$).$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$)$:

$Y=+6$

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$)$:

$Y=-0\mathrm{.}1958+1\mathrm{.}1522x$

c$)$ The estimate for guitar sales if Maroon $5$ performed on TV $11$ times $=12\mathrm{.}48$ 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 $(r^2)$ for this model $=0\mathrm{.}5452($round your response to four decimal places$).$

The percentage of variation in sales that can be explained by TV appearances $=54\mathrm{.}52\%($round your response to two decimal places$).$ I keep getting a$-$d wrong.