Stocks a and b each have an expected return of 15%, a standard deviation of 20%, and a beta of 1.2. the returns on the two stocks have a correlation coefficient of +0.6. your portfolio consists of 50% a and 50% which of the following, statements is correct? a. the portfolio's expected return is 15%. b. the portfolio's standard deviation is greater than 20%. c. the portfolio's beta is greater than 1.2. d. the portfolio's standard deviation is 20%. e. the portfolio's beta is less than 1.2.

Abakery wants to determine how many trays of doughnuts it should prepare each day. demand is normal with a mean of 5 trays and standard deviation of 1 tray. if the owner wants a service level of at least 95%, how many trays should he prepare (rounded to the nearest whole tray)? assume doughnuts have no salvage value after the day is complete.

This exercise illustrates that poor quality can affect schedules and costs. a manufacturing process has 130 customer orders to fill. each order requires one component part that is purchased from a supplier. however, typically, 3% of the components are identified as defective, and the components can be assumed to be independent. (a) if the manufacturer stocks 130 components, what is the probability that the 130 orders can be filled without reordering components? (b) if the manufacturer stocks 132 components, what is the probability that the 130 orders can be filled without reordering components? (c) if the manufacturer stocks 135 components, what is the probability that the 130 orders can be filled without reordering components?

The answer here, x=7, is not in the interval that you selected in the previous part. what is wrong with the work shown above?