An economist is interested in studying the incomes of consumers in a particular region. The population standard deviation is known to be $1,000. A random sample of 50 individuals resulted in an average income of $15,000. What is the upper end point in a 99% confidence interval for the average income?

Amathematical approximation called the rule of 70 tells us that the number of years that it will take something that is growing to double in size is approximately equal to the number 70 divided by its percentage rate of growth. thus, if mexico's real gdp per person is growing at 7 percent per year, it will take about 10 years(=70/7) to double. apply the rule of 70 to solve the following problem. real gdp per person in mexico in 2005 was about $11,000 per person, while it was about $44,000 per person in the u. s. if real gdp per person in mexico grows at the rate of 5 percent per year: how long will it take mexico's real gdp per person to reach the level that the united states was at in 2005? (hint: how many times would mexico's 2005 real gdp per person have to double to reach the u. s.'s 2005 real gdp per person?

After all revenue and expense accounts have been closed at the end of the fiscal year, income summary has a debit of $2,450,000 and a credit of $3,000,000. at the same date, retained earnings has a credit balance of $8,222,600, and dividends has a balance of $125,000. required: a. journalize the entries required to complete the closing of the accounts on december 31. refer to the chart of accounts for exact wording of account titles. b. determine the amount of retained earnings at the end of the period.

How do communism and socialism differ in terms of the role that government plays in the economy ?