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A population is normal with a variance of 17. Suppose you wish to estimate the population mean, u. Find the sample size needed to assure with 68.26% confidence that the sample mean will not differ from the population mean by more than 3 units.
Statistics and Probability, Statistics
The Waiting time for a Pizza order is supposed to be no more than 10 minutes. Some complaints have been received that the orders are in fact taking longer than the claimed 10 minutes. A batch of 50 orders was timed and f ...
One sample has n = 8 and SS = 21 and a second sample has n = 8 and SS = 35. What is the pooled variance for the two samples?
A nutritional scientist wishes to study the effect of storage time on the amount of vitamin C (milligrams) contained in 50 gram freeze dried fruit packs when stored for one, one and a half and 2 years. Five fruit packs w ...
Assume that the class consists of 45 percent freshmen, 20 percent sophomores, 20 percent juniors, and 15 percent seniors. Assume further that 50 percent of the freshmen, 50 percent of the sophomores, 25 percent of the ju ...
Can you look for multicollinearity between a categorical independent variable and a continuous dependent variable or can you only look for multicollinearity between a continuous independent variable and a continuous depe ...
One? study, based on responses from 1,016 randomly selected? teenagers, concluded that 44?% of teenagers cite grades as their greatest source of pressure. Use a 0.05 significance level to test the claim that fewer than h ...
Suppose you want to calculate the? z-score for your height. How will the? z-scores compare if you use your height in inches verses? centimeters?
Ten students were sampled at random from a student population. Each was asked how many courses he or she was planning on studying in the upcoming year. The following is a list of the reported data values: 1, 2, 2, 3, 4, ...
You have graduated from college but unfortunately have $33,000 in outstanding loans. The loans require monthly payments of $3,700, which covers interest and principal repayment (that is, the loan has the same basic featu ...
1) Explain the meaning of the following terms: Location Quotient Coefficient of Specialization Coefficient of Localization 2) Explain and contrast the z-score and the coefficient of variation. 3) Define and describe the ...
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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