ABC Corporation is evaluating a new promotional campaign that could increase home sales.Possible outcomes and probabilities of the outcomes are shown next.
Possible Outcomes Additional Sales in Units Probabilities
Ineffective campaign 40 0.30
Normal response 100 0.30
Extremely effective 120 0.40
a. What is the expected value of additional sales in units?
b. What is the standard deviation of additional sales?
c. What is the coefficient of variation?