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Families USA, a monthly magazine that discusses related to health and health costs, surveyed 30 of its subscribers. It found that the annual health insurance premiums for a family with coverage through an employer averaged $16,469. The standard deviation of the sample was $2,000.
(a) What is the population mean? What is the best estimate of the population mean?
(b) Based on this sample information, develop a 95% confidence interval for the population mean yearly premium.
(c) How large of a sample is needed to assess the population mean with an allowable error of $600 at 99% confidence?
A five-person city is debating the provision of the annual July 4th Fireworks Display that everyone in the city would be able to enjoy. The cost of providing the display is fixed at $250. The willingness to pay for the festival is given in the fol..
The earnings, dividends, and common stock price of Carpetto Technologies Inc. are expected to grow at 8% per year in the future. Carpetto's common stock sells for $27.75 per share, its last dividend was $1.50, and it will pay a dividend of $1.62 a..
Assume an economy with 1000 consumers. Each consumer has income in the current period of 50 units and future income of 60 units and pays a lump-sum tax of 10 in the current period and 20 units in the future period.
suppose that Mr Rich withdraws $ 5 Million from his transactions account at the bank of america and holds the money . Assume a reserve requirement of 25 purcent and no excess reserves in the banking system prior to this withdrawal .
Time-series data for the last 15 years are used to estimate the regression model. E = a + bN where E is total earnings of the motion picture industry measured in dollars per year and N is the number of tickets sold in December.
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..
A small nation permits free trade in good X. At the good's free-trade price of $8, domestic firms supply 6 million units and imports account for 4 million units. Recently the small country has ereted trade barriers with the result that imports hav..
A student's senior year in college will cost $80,000 in lost earnings and direct expenses. Then, for the first two years after graduation the student will earn $100,000 and $200,000. Alternatively, the individual can earn $50,000 for what would ha..
Let a firm's long-run production function be Q= 1/10LK +3L^2K-1/10L^3K Assume that in the short-run the firm's labour input is fixed at 10 units. a) What is the firm's short-run production function? b) What are the short-run average and marginal prod..
The subway fare in your town has just been increased from a current level of 50 cents to $1.00 per ride. As a result the transit authority notes a decline in ridership of 30 percent. a) compute the price elasticity of demand for the subway rides.
Briefly summarize the impact of an oil import tax by explaining who is helped and who is hurt among the following groups: domestic oil consumers, domestic oil producers, foreign oil producers, and the US government.
The demand curve for product x is given by Qx^d=460-4Px a.)Find the inverse demand curve. b.)How much consumer surplus do consumers receive when Px=$35 c.)How much consumer surplus do consumers receive when Px=$25
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