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Assume there are 18 homes in the Quail Creek area and 9 of them have a security system. Five homes are selected at random:what is the probability all five of the selected homes have a security system?
Statistics and Probability, Statistics
Why is it that some people make very high returns on the stock market if it is so efficient? Is it more difficult to reconcile very high returns with efficient markets if the same people make extraordinary returns year a ...
Recent test scores on the Law School Admission Test (LSAT) are normally distributed with a mean of 162.4 and a standard deviation of 15.9. What is the probability that the mean of 12 randomly selected scores is less than ...
An egg farmer wanted to determine if increasing the amount of time the lights were on in his hand house would increase egg production. For example of 8 chickens he determined the production before and after increasing th ...
An oil company determines it costs $25,000 to sink a test well, an oil hit yields a net revenue of $475,000($500,000 gross-$25,000costs), and a natural gas hit yields $125,000 net revenue ($150,000 gross-$25,000 costs). ...
Why has LIBOR played such a central role in international business and financial contracts? Why has this been questioned in recent debates over its value reported?
In 2013, Gallup conducted a poll and found a 95% confidence interval of the proportion of Americans who believe it is the government's responsibility for health care. Give the statistical interpretation.
A potato chip bag filling line is supposed to fill bags with 10 ounces of potato chips(by weight). The line exhibits a historical process standard deviation of .8 ounces. If chips bags are filled in lots of 20, make a 95 ...
The random variable X takes on the values 5, 20, 30, and 200 with probabilites 0.60, 0.30, 0.08, and 0.02 respectively. Use the statistical capacity of your calculator to find the expected value of Xrounded to one place ...
One hundred twenty-five marine recruits participated in a study to assess the benefits of a strength training program. Each recruit was given a push-up test at the beginning and end of the program. The change in number o ...
Suppose that, in a random sample of 100 men between the ages of 60 and 79, you found that 20 had heart disease. According to the central limit theorem, the sample proportion arises from a sampling distribution that is no ...
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Why might a bank avoid the use of interest rate swaps, even when the institution is exposed to significant interest rate
Describe the difference between zero coupon bonds and coupon bonds. Under what conditions will a coupon bond sell at a p
Compute the present value of an annuity of $ 880 per year for 16 years, given a discount rate of 6 percent per annum. As
Compute the present value of an $1,150 payment made in ten years when the discount rate is 12 percent. (Do not round int
Compute the present value of an annuity of $ 699 per year for 19 years, given a discount rate of 6 percent per annum. As