In excel with formulas please

Consider the following table, which gives a security analyst's expected return on two stocks for two

particular market returns:

a$)$ What are the betas of the two stocks? You may find it useful to draw a diagram on a $Rm-R$

plane.

b$)$ What is the expected rate of return on each stock if the market is expected to be $75\%$ Bull$($ish$)$

and $25\%$ Bear$($ish$)$

c$)$ If the T$-$bill rate is $8\%$ and the market return is equally likely to be bullish or bearish, draw the

Security Market Line for this economy.

d$)$ Plot the two securities on the SML graph.