He following annual amounts pertain to the Wolf Company: Estimated Overhead Costs $ 101,988 Estimated Direct Labor hours 67,992 If actual overhead costs for the year amounted to $106,000 and actual direct labor worked amounted to 70,000 hours, the year-end adjustment necessary to close the Manufacturing Overhead account would Multiple Choice decrease the amount of cost of goods sold . not affect the amount of cost of goods sold. increase the amount of cost of goods sold. There would be no adjusting entry at the end of the accounting period.

Suppose that in a given population of two-earner male-female couples, male earnings have a mean of $40,000 per year and a standard deviation of $12,000. female earnings have a mean of $45,000 with a standard deviation of $18,000. the correlation between male and female earnings for a couple is 0.8. let z be the combined earnings for a randomly selected couple.a.are male-female earnings independent? yes or no? b. what is the mean of z? c.what is the covariance between male and female earnings? d. what is the standard deviation of z? e. convert the answers of a. to c. if earnings were measured in euros.