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Why can the covariance of a pair of random variables be negative when the variance of random variables is always non-negative?
Business Economics, Economics
You've entered a contract to purchase a new house, and the closing is scheduled for next week. It's typical for some last-minute bargaining to occur at the closing table, where sellers often try to tack on extra fees. Yo ...
Benefits of abating emission: MB=500-20A Cost of abating emission: MC=200+5A What are the marginal benefit and marginal cost of abatement at socially efficient level of abatement? What is the net social benefit at the ef ...
a. Suppose that, for a given year, national saving in a country (an open economy) equals 100, private consumption equals 50, and government consumption equals 20. What is the level of output in this country in this year? ...
Suppose a sports team did a study that showed that the demand curve for tickets was perfectly inelastic at the capacity of building up to a price of $350 per ticket, at which point it becomes perfectly elastic. 1) Draw a ...
Imagine a small city Chambana with a labor demand function E=200-1/2w and a labor supply function E=2w-100. Assume that there is a sudden influx of 40 perfect substitutes immigrants. a. How does this affect the natives i ...
What is a Survey and pros and cons of using this method to collect data are? Have you done a survey? How successful were your results?
Some residents of the village of Taugswater have proposed purchasing logging permits relating to a nearby wilderness area. The majority of residents agree that the purchase of permits, to be set aside and not used, is th ...
We have bottles of milk that have a mean of 20 oz and standard deviation of 0.02. What is the probability that a bottle would have a mean of more than 20.3 oz?
Suppose a soft drink company want to perform a taste test on 5 brands of diet cola. How many permutations are there for presenting 5 diet colas to test subjects?
An insurance company will pay Dave $220,000 (the market value of the house) should his house be destroyed by fire during the year. In return, Dave pays the insurance company $1280 that year (called the "premium") for tha ...
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