Consider a portfolio with three stocks, each with the same value. The three stocks have standard deviations of 20%, 40%, and 90%. The standard deviation of this portfolio is
a. no greater than 50%.
b. less than 20%.
c. exactly 40%.
d. more than 90%.
a. no greater than 50%.
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A firm pays Pam $40 per hour to assemble personal computers. Each day, Pam can assemble 4 computers if she works 1 hour, 7 computers if she works 2 hours, 9 computers if she works 3 hours, and 10 computers if she works 4 hours. Pam cannot work more than 4 hours day. Each computer consists of a motherboard, a hard drive, a case, a monitor, a keyboard, and a mouse. The total cost of these parts is $600 per computer. If the firm sells each computer for $625, then how many hours a day should the firm employ Pam to maximize its net benefit from her employment?
A. 1 hour B. 3 hours C. 2 hours D. 4 hours
The table above shows the total product schedule for Rick's Lawn Service, a yard care company. Increasing marginal returns
A) end when the fourth worker is hired. B) occur at all levels of employment. C) occur as long as output increases. D) end when the second worker is hired. E) never occur.
What is a marginal benefit?
What will be an ideal response?
Your textbook refers to a "basket" of currencies. What is it?
a. a random selection of currencies b. currencies that are low-valued and unstable c. currencies that represent the average increase in value for all currencies d. currencies most used by the nation in its trade and other transactions, weighted by their importance