In a simple linear regression task that regresses variable on variable $,$ Excel produces the following table with certain numbers masked by $($a$)-($j$).($a$)$ Reproduce the numbers masked by $($a$)-($j$)$ using the existing information in the table. $($b$)$ What is the regressed equation? XY$1$q$50\mathrm{.}0=($c$)$ Is the model significant at the significance level $?($d$)$ What is the correlation coefficient of and $?($e$)$ For the test $,,$ should we reject at the significance level $?$