Exercise 1: Here is a sample of checks from the Metro Diner from this past week: $57 $102 $59 $58 $77 $55 $101 $74 $71 $60 $85 $62 $70 $77 $91 $71 $66 $66 $67 $77 $94 $68 $105 $85 $100 $78 $73 $73 $74 $85 $55 $99 $57 $56 $75 $53 $50 $72 $69 $51 a) How many classes would you recommend? b) What class interval would you suggest? c) Construct a frequency distribution, relative frequency distribution, and a cumulative frequency distribution d) Draw a histogram, frequency polygon, and ogive e) Comment on the "shape" of the data

Suppose that xtel currently is selling at $40 per share. you buy 500 shares using $15,000 of your own money, borrowing the remainder of the purchase price from your broker. the rate on the margin loan is 8%. a. what is the percentage increase in the net worth of your brokerage account if the price of xtel immediately changes to (a) $44; (b) $40; (c) $36? (leave no cells blank - be certain to enter "0" wherever required. negative values should be indicated by a minus sign. round your answers to 2 decimal places.) b. if the maintenance margin is 25%, how low can xtel’s price fall before you get a margin call? (round your answer to 2 decimal places.) c. how would your answer to requirement 2 would change if you had financed the initial purchase with only $10,000 of your own money? (round your answer to 2 decimal places.) d. what is the rate of return on your margined position (assuming again that you invest $15,000 of your own money) if xtel is selling after one year at (a) $44; (b) $40; (c) $36? (negative values should be indicated by a minus sign. round your answers to 2 decimal places.) e. continue to assume that a year has passed. how low can xtel’s price fall before you get a margin call? (round your answer to 2 decimal places.)

Suppose that in an economy the structural unemployment rate is 2.2 percent, the natural unemployment rate is 5.3 percent, and the cyclical unemployment rate is 2 percent. the frictional unemployment rate is percent and the actual unemployment rate (in this economy) is percent.

Any point on a country's production possibilities frontier represents a combination of two goods that an economy: