Please show detailed steps . No excel. Everything manual with a calculator.

I. stock has mean of 8% and stdev of 20%; ii bond has mean of 6% and stdev of 15%; ii correlation b/w stock and bond of -0.3; iv. Risk free rate for cash lending and borrowing is at 1%. a. What is the mean and stdev of a portfolio of that is 60% in stock and 40% in bond (3 points)? b. What is the mean and stdev of a fully invested yet unleveraged portfolio in stock and bond, that assign weights based on inverse of stdev risk (3 points)? I. stock has mean of 8% and stdev of 20%; ii bond has mean of 6% and stdev of 15%; ii correlation b/w stock and bond of -0.3; iv. Risk free rate for cash lending and borrowing is at 1%. a. What is the mean and stdev of a portfolio of that is 60% in stock and 40% in bond (3 points)? b. What is the mean and stdev of a fully invested yet unleveraged portfolio in stock and bond, that assign weights based on inverse of stdev risk (3 points)