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A survey was mailed to a total of 400 students; 100 were randomly selected from each of the freshman, sophomore, junior and senior classes last semester. What sampling method was used?
Statistics and Probability, Statistics
Your firm is contemplating the purchase of a new $585,000 computer-based order entry system. The system will be depreciated straight-line to zero over its five-year life. It will be worth $95,000 at the end of that time. ...
In order to fund her retirement, Helen needs her portfolio to have an expected return of 13.8 percent per year over the next 30 years. She has decided to invest in Stocks 1, 2, and 3, with 25 percent in Stock 1, 50 perce ...
1) Suppose you purchase a 10-year bond with 6.4%annual coupons. You hold the bond for four years, and sell it immediately after receiving the fourth coupon. If the bond's yield to maturity was 5.4% when you purchased and ...
In a survey of 3439 adults, 1418 say they have started paying bills online in the last year. Construct a? 99% confidence interval for the population proportion. Interpret the results.
During the winter of? 2008-2009, the average utility bill for residents of a certain state was ?$173 per month. A random sample of 30 customers was selected during the winter of? 2009-2010, and the average bill was found ...
Question: In one law school class the entering students averaged 700 on the LSAT test with a standard de-viation of 40. Assuming the distribution of test scores was normal, what fraction of the class scored above 750? Th ...
A quiz consists of 70 multiple choice? questions, each with five possible? answers, only one of which is correct. If a student guesses on each? question, what is the mean and standard deviation of the number of correct? ...
When Carolina's house burned down, she lost household items worth a total of $145,000. Her house was insured for $245,000, and her homeowner's policy provided coverage for personal belongings up to 70 percent of the insu ...
A logging truck sales representative will phone either one or two potential buyers per day with probabilities of 0.25 and 0.75, respectively. Each contact will result in either no sale or a $75,000 sale with probabilitie ...
Next time you see an elderly man, check out his nose and ears! While most parts of the human body stop growing as we reach adulthood, studies show that noses and ears continue to grow larger throughout our lifetime. In o ...
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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