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The Oil Price Information Center reports the mean price per gallon of regular gasoline is $3.79 with a population standard deviation of $0.18. Assume a random sample of 40 gasoline stations is selected and their mean cost for regular gasoline is computed.
(a) What is the standard error of the mean in this experiment? (Round your answer to 4 decimal places.)
(b) What is the probability that the sample mean is between $3.77 and $3.81? (Round z value to 2 decimal places.Round your final answer to 4 decimal places.)
(c) What is the probability that the difference between the sample mean and the population mean is less than 0.01? (Round z value to 2 decimal places. Round your final answer to 4 decimal places.)
(d) What is the likelihood the sample mean is greater than $3.87?
On Juan's twenty-sixth birthday, he deposited $6,000 in a retirement account. Each year thereafter, he deposited $1,000 more than the previous year. Using a gradient series factor,determine how much was in the account immediately after his thirty-f..
Suppose the daily demand for coffee in Seattle is Q^d=100,000(3-P)^2 A. What is the elasticity of demand (Ed) at a price of $2.(Please show exactly which equation is needed to find Ed here) B. At what price would the total expenditure on coffee be la..
5 150 300 6 150 390 Refer to the above data. If the product price is $95 at its optimal output, will the firm realize an economic profit, break even, or incur an economic loss How much will the profit or loss be Show all ca..
Explain how you would test null hypothesis that b1=0 in the multiple regression model, Y=b0+b1*X1+b2*X2+b3*X3+u. Also, explain how you would test the joint null hypothesis that b1=b2=0
Abby consumes only apples. In year 1, red apples cost 1$ each, green apples 2$ each, and Abby buys ten red apples. In year 2, red apples cost $2, green apples cost $1, and Abby buys 10 green apples.
Ahead of you is a wonderful weekend. You bought a ticket to see a professional football game. The ticket cost $50 a piece, plus you estimate a cost of $25 each for gas to the game and parking. Since the game is in the middle of the afternoon, you ..
Initally, the population of Cape Despair is constant and real GDP per hour of labor is at the subsistence level of $15. Then a technological advance shifts the production function upward by 50 percent at each level of labor.What are the initial le..
a. Graph the demand and supply curves. What is the equilibrium price and quantity in this market b. If the actual price in this market were ABOVE equilibrium price, what would drive the price toward the equilibrium
demand and supply schedules for rental apartment in the city of Gotham are given below Monthly Rent $2500 $2000 $1500 $1000 $500 Apartment Demanded 10,000 12,500 15,000 17,500 20,000 Apartment Supplied 15,000 12,500 10,000 7,500 5,000 Suppose a ne..
The Mexican peso is trading at 10 pesos per dollar. If the expected U.S. inflation rate is 2% while the expected Mexican inflation rate is 23% over the next year, given PPP, what is the excpected exchange rate in one year
Assume that savings are invested at the end of each calendar year. Assume that during your working life you earn a return of 8% per year, and that when you retire at age 65 you move your assets into more conservative investments and earn a return ..
The Ajax Manufacturing Company wishes to choose one of the following machines. Machine 1 Machine 2 Machine 3Initial cost $12,000 $15,000 $21,000 Planning horizon 5 years 5 years 5 years Salvage value $1200 $2,000 $3,000Revenue years 1,..,k $3,000 +50..
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