Stocks A and B have the following$$ returns:

$1$

$0\mathrm{.}08-$stock A

$0\mathrm{.}07-$ stock B

$2$

$0\mathrm{.}05-$ Stock A

$0\mathrm{.}04-$ Stock B

$3$

$0\mathrm{.}13-$ Stock A

$0\mathrm{.}03-$ Stock B

$4$

$-0\mathrm{.}03-$ Stock A$$

$0\mathrm{.}03-$ Stock B

$5$

$0\mathrm{.}09-$ Stock A

$-0\mathrm{.}04-$ Stock B$$

a$.$ What are the expected returns of the two$$ stocks?

b$.$ What are the standard deviations of the returns of the two$$ stocks?

c$.$ If their correlation is $0\mathrm{.}46,$ what is the expected return and standard deviation of a portfolio of $70\%$ stock A and $30\%$ stock$$ B$?$