"Customer Service Activity Activity Base Activity Rate Bid preparation Number of bid requests $420 per request Shipment Number of shipments $90 per shipment Support standard items Number of standard items ordered $30 per std. item Support nonstandard items Number of nonstandard items ordered $180 per nonstd. item Assume that the company had the following gross profit information for three representative customers: Customer 1 Customer 2 Customer 3 Revenues $130,000 $210,000 $180,000 Cost of goods sold (81,900) (113,400) (90,000) Gross profit $48,100 $96,600 $90,000 Gross profit as a percent of sales 37% 46% 50% The administrative records indicated that the activity-base usage quantities for"

Stocks a, b, and c are similar in some respects: each has an expected return of 10% and a standard deviation of 25%. stocks a and b have returns that are independent of one another; i.e., their correlation coefficient, r, equals zero. stocks a and c have returns that are negatively correlated with one another; i.e., r is less than 0. portfolio ab is a portfolio with half of its money invested in stock a and half in stock b. portfolio ac is a portfolio with half of its money invested in stock a and half invested in stock c. which of the following statements is correct? a. portfolio ab has a standard deviation that is greater than 25%.b. portfolio ac has an expected return that is less than 10%.c. portfolio ac has a standard deviation that is less than 25%.d. portfolio ab has a standard deviation that is equal to 25%.e. portfolio ac has an expected return that is greater than 25%.