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Problem: Let (X, Y) be jointly distributed inside the ellipse given by {(x, y) : ax2 + by2 = 1}. Find the marginal densities of X and Y and the conditional densities of Y given X and X given Y. Are X and Y correlated? Are they independent?
Statistics and Probability, Statistics
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Calculate the standard deviation of a portfolio consisting of 40 percent stock X and 60 percent stock Y. Company Beta Expected Return Variance Covariance X 1.8 0.18 0.30 COVx,y=0.080 Y 2.6 0.22 0.04 Round to the nearest ...
Suppose you believe that Du Pont's stock price is going to decline from its current level of $82 sometime during the next 5 months. For $5.25 you could buy a 5-month put option giving you the right to sell shares at a pr ...
A survey found that people keep their televisions an average of 5.8 years. The standard deviation is 0.76 year. If a person decides to buy a new TV, find the probability that he or she owned the old one for the given amo ...
In a sample of 20 cups of coffee at the local coffee shop, the average temperature was 162.5 degrees with a standard deviation of 14.1 degrees. What would be the 95% confidence interval for the temperature of your cup of ...
The commissioner of the state police is reported as saying that about 10% of reported auto thefts involve owners whose cars haven't really been stolen. What null and alternative hypotheses would be appropriate in evaluat ...
What would be examples of valid selection methods used by the human resource department to ensure selecting the appropriate candidate for a job.
Matterhorn, Inc. had the following sales for the past six months. Matterhorn collects its credit sales 30% in the month of sale, 60% one month after the sale, and 10% two months after the sale. Cash Sales Credit Sales Ja ...
Please help answer the following question 1) Some research suggests that police officers are more likely to make an arrest in the presence of bystanders. If mentally disordered suspects attract more attention from bystan ...
1) Assume that the international average homicide victimization rate is 2.92 (per 100,000). In a sample of 24 industrialized nations, LaFree and Drass (2002) found that the mean homicide victimization rate was 1.49 (per ...
The weights of bags of peas are normally distributed with a mean of 12.08 ounces and a standard deviation of 1.03 ounces. Bags in the upper 4% are too heavy and must be repackaged. What is the most that bag and weigh and ...
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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
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Compute the present value of an $1,150 payment made in ten years when the discount rate is 12 percent. (Do not round int
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