Organizers of an outdoor summer concert in Toronto are concerned about the weather conditions on the day of the concert. They will make a profit of $42,000 on a clear day and $12,000 on a cloudy day. They will make a loss of $6,000 if it rains. The weather channel has predicted a 52% chance of rain on the day of the concert. Calculate the expected profit from the concert if the likelihood is 11% that it will be sunny and 37% that it will be cloudy.

Which of the following statements is (are) true? i. free entry to a perfectly competitive industry results in the industry's firms earning zero economic profit in the long run, except for the most efficient producers, who may earn economic rent. ii. in a perfectly competitive market, long-run equilibrium is characterized by lmc < p < latc. iii. if a competitive industry is in long-run equilibrium, a decrease in demand causes firms to earn negative profit because the market price will fall below average total cost.