Suppose you have $375,000 in​ cash, and you decide to borrow another $63,750 at a 7% interest rate to invest in the stock market. You invest the entire $438,750 in a portfolio J with a 20% expected...

Suppose you have $375,000 in​ cash, and you decide to borrow another $63,750 at a 7% interest rate to invest in the stock market. You invest the entire $438,750 in a portfolio J with a 20% expected return and a 28% volatility.

a. What is the expected return and volatility​ (standard deviation) of your​ investment?

b. What is your realized return if J goes up 39% over the​ year?

c. What return do you realize if J falls by 19% over the​ year?