a$)$ Find the expected return of each stock.

Use at least seven decimal places in computations of $($b$),($c$)$ and $($d$)$ below to avoid significant rounding errors.

b$)$ Calculate the variance and standard deviation of returns of each stock.

c$)$ Compute the covariance and correlation of returns between the two stocks.

d$)$ Assume that you invest $$40,000$ in Stock S and $$60,000$ in Stock T$.$ Find the expected return on the portfolio and the standard deviation of the portfolio$$s return.