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One of the measures used in studying health and obesity is the Body Mass Index (BMI). A BMI measure between 20 and 25 is considered healthy; a measure of over 30 makes a person obese. The average BMI in the United States rose from 25 to about 27.75 in the last 25 years. This is considered a large increase, and many social scientists have been trying to explain this trend. The results below come from a regression estimated using a national cross section sample of adults. The dependent variable was BMI, and the sample size was over 42000. Independent Variable Sample Mean of Variable (Standard Deviation) Coefficient in Regression (Standard Error) Restaurants per capita in respondent's state 11.04 (2.27) .473 (.324) Age in years 41.24 (16.68) .326 (.016) Age squared -- -.003 (.0002) Cigarette tax per pack in cents in respondent's state 22.58 (9.77) .058 (.032) Cigarette tax squared -- -.001 (.0004) Household income in 10,000s of dollars 2.91 (2.39) -.393 (.168) a. According to this regression, at about what age does BMI reach its highest level in American adults, other things equal?
An advisory group decided to investigate this claim, believing it was too large. A sample of 200 traffic accidents this year showed 74 persons were also involved in another accident within the last five years.
Assume that the marginal cost (supply) of influenza vaccinations is constant at $40. Assume that everyone in society has health insurance that pays 80% of all medical services, including flu shots. Assume first that the flu is not contagious. Defi..
A corporation is interested in knowing which potential sales are next year if you use $20,000 in advertising expenses. The corporation uses the data from previous years to make its sales forecast.
You estimate the operating expenses, including taxes, will be $45,000 for the first year and that they will increase by $3000 each year thereafter. You also estimate that razing the building and selling the lot on which stands will realize a net a..
What are consumption and saving in each period, assuming no borrowing constraints? What happens if the consumer faces a borrowing constraint that prevents her from borrowing?
The unit cost of a console to Nintendo is $30, and of a game to Sega is $10. Suppose, each month, Nintendo considers prices $250 and $350 for consoles, and Sega considers $40 and $50 for games.
Given the following variables in the open economy aggregate expenditure model, autonomous consumption (C o) = 200, autonomous investment (I o) = 200, government spending (G o) = 100, export spending (X o) = 100, autonomous import spending (M o) = ..
given the following variables in the open economy aggregate expenditure model, autonomus consumption=200, autonomus investment=200, government spending=100, export spending=100, taxes=0, marginal propensity to consume=0.8
Amy has $12 a week to go spend on coffee and pop. The Price of coffee is $2 a cup, and pop is $1 a can. Draw a graph of Amy's budget line. Can Amy buy 7 cans of pop and 2 cups of coffee a week? Can she buy 7 cups of coffee and 2 cans of pop a week..
Suppose the government imposes a 25-percent tax on accounting profits. This tax is only levied if a firm is earning positive accounting profits. What will your after-tax accounting profit be in the low-revenue case In the high-revenue case.
If the firm can only produce one product and seeks to maximize weekly profit, write a condition that indicates when the firm should choose to produce Product 2 (where this condition is a function of the number of units sold per week).
The price elasticity of demand for heroin is .27. Suppose that half of the existing heroin users support their habits with property crime. Further, the loss from property crimes committed by heroin users equals half of the total spending (total r..
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