Harry's Hamburgers claims that the residents of Harryville eat at the hamburger chain an average of exactly 18 times per year. You took a sample of 48 residents of Harryville and found that the sample mean was 17. The sample standard deviation was 4.5. You want to test to see if Harry's claim can be disputed with a significance level of 0.05. For each number in the problem, give the appropriate mathematical symbol associated with that number: 18 = Use the Margin of Error to calculate a confidence interval. State the confidence interval below as a compete sentence, using the format shown in Module 12.90. Round your numbers to one decimal point.

Exercise B6 What is a substitution effect?

Exercise B11 Which is larger, the income effect or the substitution effect?

Exercise A2 What is slope on a line graph?

Exercise B7 What is an income effect?

Savings-Mart (a chain of discount department stores) sells patio and lawn furniture. Sales are seasonal, with higher sales during the spring and summer quarters and lower sales during the fall and winter quarters. The company developed the following quarterly sales forecasting model: Y t=8.25+0.125t2.75D1t+3.50D3t where Y t=predictedsales(million)inquartert 8.25=quarterlysales(million)whent=0 t=timeperiod(quarter)wherethefourthquarterof2002=0,firstquarterof2003=1,secondquarterof2003=2,... D1t={1forfirst-quarterobservations0otherwiseD2t={1forsecond-quarterobservations0otherwiseD3t={1forthird-quarterobservations0otherwise Forecast Savings-Marts sales of patio and lawn furniture for each quarter of 2010.

Metropolitan Hospital has estimated its average monthly bed needs as N=1,000+9X where X=timeperiod(months);January2002=0 N=monthlybedneeds Assume that no new hospital additions are expected in the area in the foreseeable future. The following monthly seasonal adjustment factors have been estimated, using data from the past five years: Forecast Metropolitans bed demand for January, April, July, November, and December 2007. If the following actual and forecast values for June bed demands have been recorded, what seasonal adjustment factor would you recommend be used in making future June forecasts?

Exercise D21 What are some reasons that the economy might be in a recession, and what is the appropriate government action to alleviate the recession?

Exercise B3 Why are indifference curves sleep on the left and flatter on the right?

Exercise D11 Why does the import function slope down? What is the marginal propensity to import?