$\backslash$table$[[,$IBM,AMZN$],[$E$($R$),0\mathrm{.}07,0\mathrm{.}11],[$Standard Deviation,$0\mathrm{.}10,0\mathrm{.}18],[$Correlation$,0\mathrm{.}45,]]$

Suppose you have the above data on IBM and Amazon, compute the expected return and the standard deviation of an equally weighted portfolio invested in the two securities$.$ Is there a diversification benefit? Please show your work and round to at least $3$ decimal places.