Company A Company B

$3\mathrm{.}175\mathrm{.}22$

$5\mathrm{.}408\mathrm{.}04$

$8\mathrm{.}996\mathrm{.}46$

$5\mathrm{.}931\mathrm{.}42$

$3\mathrm{.}177\mathrm{.}01$

$3\mathrm{.}198\mathrm{.}13$

$7\mathrm{.}903\mathrm{.}97$

$5\mathrm{.}332\mathrm{.}14$

$5\mathrm{.}481\mathrm{.}83$

$3\mathrm{.}797\mathrm{.}53$Suppose we want to compare the average daily stock

returns of two different companies, Company A and

Company B$,$ to determine if there is a significant difference

between the two. We have the daily stock returns for each

company over a sample of $10$ trading days. Test the

hypothesis that the average daily stock returns of Company

$A$ is the same with the average daily stock returns of

Company B using the dataset below $($use alpha $0\mathrm{.}05).$ What

is the $t$ statistics?

$($Round the answer to three decimal points. For example,

$0\mathrm{.}34526376$ should be $0\mathrm{.}345$ and $0\mathrm{.}34576376$ should be

$0\mathrm{.}346).$

stock returns a b$.$xlsx darr