To test H(0): u = 20 vs. H(A): u<>20, a sample of 400 will be taken from a large population, whose standard deviation is 5. H(0) will be rejected if XBAR >= 20.5 or XBAR <= 19.5. The level of significance of this test is approximately:

Which one of these patterns is not a continuation pattern?

Suppose that P(A) = 0.2 and P(B|A) = 0.6, find P(AB).

An airline initially has a single price of $200 for all consumers. At this price, it sells 400 business tickets and 700 tourist tickets. The airline's marginal cost is $50. The slope of the business demand curve is 2.0 (in absolute value), and the slope of the tourist demand curve is 0.1 (in absolute value). How can the airline increase its profits, assuming that it can separate the market and prevent resale?

In a period of rising prices, many firms adopt the periodic LIFO method of accounting for inventory cost for tax purposes. When compared with periodic FIFO or average cost: