Mark Gershon, owner of a musical instrument distributorship, thinks demand for guitars may be related to the number television appearances by the popular group Maroon $5$ during the previous month. Gershon has collected the data shown in the following table:

$\backslash$table$[[$Maroon $5$ TV Appearances,$3,3,6,7,7,5],[$Demand for Guitars,$2,5,6,6,9,7]]$

The least squares Linear Regression Model from this data is: $Y-$hat $=0\mathrm{.}87130\mathrm{.}8713+0\mathrm{.}9604x$

What is the estimate for guitar sales if Maroon $5$ performed on TV $9$ times and what is the correlation coefficient $(r)f$ this model?

Y$-$hat $=9\mathrm{.}51R=0\mathrm{.}5787$

Y$-$hat $=5\mathrm{.}27R=0\mathrm{.}5787$

Y$-$hat $=9\mathrm{.}51R=0\mathrm{.}7607$

Y$-$hat $=7\mathrm{.}07R=0\mathrm{.}7607$