Identifying the difference between consumer ads and business-to-business ads is becoming more difficult, especially in television, outdoor, and Internet ads

Which one of the following will be constant for all securities if the market is efficient and securities are priced fairly?

A. variance B. standard deviation C. reward-to-risk rati D. beta E. risk premium

An activity has an optimistic time estimate of 17 days, a most likely estimate of 22 days, and a pessimistic estimate of 32 days. What is the expected duration of the activity?

A) 22.83 days B) 23.67 days C) 24.33 days D) 25.17 days