Using the hypothesis test framework in prepared Excel, calculate whether the differences in returns change $($mean$)$ are statistically significant $1$between S&P$500$ and Dow$-$Jones, and $2$between S&P$500$ and the company.

Hint: three T$-$test for S&P $500$ and Dow$-$Jones, and three T$-$test for S&P$500$ and the company.

$($excluding the test using Volume as a variable$)$