According to the U. S. Energy Information Administration, the mean monthly household electric bills in the United States in 2007 was $99.70. Assume the amounts are normally distributed with a standard deviation of $20. Answer the following questions. (Use the z table, keep four decimal places for proportions, and keep two decimal places for bill amounts.) 1) What proportion of household electric bills are over $131.50?
2) What proportion of household electric bills are less than $80?
3) What is the probability that a randomly chosen household electric bill is between $85.50 and $111.50
4) What is the probability that a randomly chosen household electric bill is either higher than $105 or less than $90?
5) What household electric bill amount represents the most expensive 30% of household electric bills?

Select all that apply. select the ways that labor unions can increase wages. collective bargaining reducing the labor supply increasing the demand for labor creating monopolies

For the year ended december 31, a company has revenues of $323,000 and expenses of $199,000. the company paid $52,400 in dividends during the year. the balance in the retained earnings account before closing is $87,000. which of the following entries would be used to close the dividends account?

Magic realm, inc., has developed a new fantasy board game. the company sold 15,000 games last year at a selling price of $20 per game. fixed expenses associated with the game total $182,000 per year, and variable expenses are $6 per game. production of the game is entrusted to a printing contractor. variable expenses consist mostly of payments to this contractor.required: 1-a. prepare a contribution format income statement for the game last year.1-b. compute the degree of operating leverage.2. management is confident that the company can sell 58,880 games next year (an increase of 12,880 games, or 28%, over last year). given this assumption: a. what is the expected percentage increase in net operating income for next year? b. what is the expected amount of net operating income for next year? (do not prepare an income statement; use the degree of operating leverage to compute your answer.)