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The 2009 GRE has 200 problems with 3 possible answers and only one of which is correct. For a candidate who guesses at all answers, find the mean and variance for the random variable X, the number of correct answers.
Statistics and Probability, Statistics
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 ...
in a survey of 3175 adults,1487 say they have paid their bills online in the last year. construct a 99% confidence interval for the population proportion.
Informatics and Financial Applications Background The assignment of a payroll calculator demonstrates Excels ability to automate and present financial calculation information clearly. The ability to build and professiona ...
John plans to take three suits on his business trip. If John owns 8 suits, how many ways can the 3 suits be selected?
A lumber grading system is known to be defective 20% of the time. Normally, 20% of the lumber that passes through is rejected, but when it is defective, 50% of the pieces are rejected. In either case, pieces that are acc ...
A company recently had 26 million shares outstanding trading at $45/share. The company announces its intention to raise $290M by selling new shares. Studies show losses are 30%of the size of the new issue, so how large a ...
Diastolic blood pressures are approximately normally distributed with a mean of 75 and a standard deviation of 10. If we consider samples of 20 patients, what is the 90th percentile of the mean diastolic blood pressure?
A process is normally distributed with a mean of 104 rotations per minute and a standard deviation of 8.2 rotations per minute. If a randomly selected minute has 118 rotations per minute, would the process be considered ...
A? BBB-rated corporate bond has a yield to maturity of 11.2%. A U.S. treasury security has a yield to maturity of 9.9%. These yields are quoted as APRs with semiannual compounding. Both bonds pay? semi-annual coupons at ...
A school district is trying to estimate the proportion of students at the high school who would eat a school breakfast if the cafeteria were opened to students at 6 am. A new employer opened up within the district and th ...
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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