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Question: 1. What are the advantages of a sufficient statistic? Can you think of a possible disadvantage of sufficiency?
2. Why is consistency an important property?
Statistics and Probability, Statistics
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A laboratory worker finds that the 3% of his blood samples test positive for the HIV virus. In a random sample of 70 blood tests, what is the mean number that test positive for the HIV virus? (Round your answer to 1 deci ...
A Travel Weekly International Transport Association survey asked business travelers about the purpose for their most recent business trip. 19% responded that it was for an internal company visit. Suppose 950 business tra ...
Should you perform a log transformation on a categorical (nominal) variable, or can you only do that for continuous variables?
According to a study in a previous year, 57.0% of households nationwide used natural gas for heating during a year. Recently, a survey of 2,700 randomly selected households showed that 58.0% used natural gas. Use a 0.05 ...
A confidence interval estimate is desired for the gain in a circuit on a semiconductor device. Assume that gain is normally distributed with standard deviation σ = 30. (a) How large must n be if the length of the 95% CI ...
David currently has $500 in an account that earns 10% APR, compounded monthly. Assuming he doesn't withdraw any of the funds, how much will his balance be in 6 years?
Question: Suppose the Gap is considering putting a factory outlet store on Main Street and they hire you to conduct some required research. You implement a survey and ask 225 students how much they believe they would spe ...
The risk-free rate is 2.0%. In the Fama-French model, the equity risk premium is 4.0%, the size premium is 2.0%, and the value premium is 2.8%. Glude Corp has a market beta of 1.20, a size beta of -0.30, and a value beta ...
European bonds pay coupons annually, while U.S. bonds pay coupons semiannually. If the coupon rate on a European bond is 12% (annual coupons), what is the comparable coupon rate for a U.S. bond (semiannual coupons) assum ...
A book company sells 10, 000 books a month, each book has a 1/500 chance of being returned. Us the Poisson approximation to find the probability that the number of books returned in a month will be at most 3.
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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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