Please show me how to do it without Excel, just my calculator.

Consider the following information on a portfolio of three stocks: State of Probability of Economy State of Economy Stock A Stock B Stock C Rate of Return Rate of Return Rate of Return 32 .15 27 25 .16 -35 .07 Boom Normal Bust .45 .55 points .33 - 26 % 01:25:09 References a. If your portfolio is invested 40 percent each in A and B and 20 percent in C, what is the portfolio's expected return, the variance, and the standard deviation? (Do not round intermediate calculations. Round your variance answer to 5 decimal places, e.g., 32.16161. Enter your other answers as a percent rounded to 2 decimal places, e.g., 32.16.) b. If the expected T-bill rate is 4.5 percent, what is the expected risk premium on the portfolio? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.) Expected return Variance Standard deviation Expected risk premium Consider the following information on a portfolio of three stocks: State of Probability of Economy State of Economy Stock A Stock B Stock C Rate of Return Rate of Return Rate of Return 32 .15 27 25 .16 -35 .07 Boom Normal Bust .45 .55 points .33 - 26 % 01:25:09 References a. If your portfolio is invested 40 percent each in A and B and 20 percent in C, what is the portfolio's expected return, the variance, and the standard deviation? (Do not round intermediate calculations. Round your variance answer to 5 decimal places, e.g., 32.16161. Enter your other answers as a percent rounded to 2 decimal places, e.g., 32.16.) b. If the expected T-bill rate is 4.5 percent, what is the expected risk premium on the portfolio? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.) Expected return Variance Standard deviation Expected risk premium