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A population of students spends an average of $8 a day on dinner. The standard deviation of the expenditure is $4. A simple random sample of 64 students is taken. Be sure to show work.
a. What are the expected value, standard deviation, and shape of the sampling distribution of the sample mean?
b. What is the probability that average spending is more than $9?
c. What is the probability that average spending is between $7 and $9?
Traci is planning to sell her house, and she is considering making two upgrades to the house before listing it for sale. Replacing the carpeting will cost her $3,000 and replacing the roof will cost her $6,000. Traci expects the new carpeting to i..
What is the sample standard deviation of weights and calculate the change in weight
Your credit card has a current balance of $4965.20. This Balance is accruing interest at a nominal rate of 9.0% compounded monthly. Assuming you didnt spend any more on this card, what uniform monthly payment over the next 36 months would be requi..
Assume the following data for a country: total population, 500; population under 16 years of age or institutionalized, 120; not in labor force, 150; unemployed, 23; part-time workers looking for full-time jobs, 10. What is the size of the labor fo..
Suppose that a new government is elected that wants to keep out the poor. It declares that the minimum rent that can be charged is $2500 per month. If the government can enforce that price floor, will there be a surplus or a shortage Of how many u..
A monopolist has a linear inverse demand of: P(q) = 100 - (1/4)q and has a cost function of: C(q) = 2438 + 4q What are the monopolistic market price, quantity and prots
Suppose that fixed costs increase by $50 but the prevailing market price remains unchanged. Using algebra determine the effects of this change in cost on the profit maximizing output and the optimal profit. Algebraically calculate the profit maxim..
Assume that Country A has a population of 500,000 and only produces one good- car. Country A produces 100,000 cars per year. The people in Country A purchase 90,000 cars, but there are not enough cars to fulfill all the demand.
ADVANCED ANALYSIS Currently, at a price of $1 each, 100 popsicles are sold per day in the perpetually hot town of Rostin. Consider the elasticity of supply. In the short run, a price increase from $1 to $2 is unit-elastic (Es = 1.0). So how many p..
c.How would the bank's balance sheet would be altered if it extended this loan d. Suppose the required reserves were 20 percent. If this were the case. would the bank be in a position to extend any additional loans
Country A produces two goods, elephants and saddles. In the year 2006, the 100 units of elephants produced sold for $2,500 per unit and the 30 units of saddles produced sold for $200 per unit. In 2007, the 120 units of elephants produced sold for ..
Suppose the total benefit derived from a given decision, Q, is B(Q) = 25Q - Q^2 and the corresponding total cost is C(Q) = 5 + Q^2, so that MB(Q) = 25 -2Q and MC(Q) = 2Q. What level of Q maximizes net benefits
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