please do the steps usinf a BA II plus professional calculator. i already know the answer, i need help with the steps using the calculator.

(Negative numbers are shown in parentheses in all problems below) 1. Consider the following probability distribution for returns on the stock of Venable, Inc. Scenario: Rate of Return: Probability: Poor (15%) .20 Average 10% Good 36% .30 .50 Calculate the expected return, standard deviation of returns, and coefficient of variation for this stock