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A large electronics company wants to estimate the proportion of all households that own GPS machines. What sample size is required that would give the maximum error of 2.0% for a 95% confidence interval? An unscientific survey had a result of 30%.
Statistics and Probability, Statistics
1) Suppose you purchase a 30?-year, ?zero-coupon bond with a yield to maturity of 6.5 % You hold the bond for five years before selling it. i. If the? bond's yield to maturity is 6.5 % when you sell? it, what is the ann ...
Which is more detrimental to the sale of a popular athlete's paraphernalia, bad behavior on-the-field or bad behavior off-the-field? What is the Null Hypothesis: What is the Alternative Hypothesis:
Determine the critical? value(s) for a? left-tailed test of a population mean at the alpha α=0.01 level of significance based on a sample size of n=15.
Given the following values: = 20, M = 16, = 0.7, conduct a one-sample z test at a .05 level of significance. What is the decision for a two-tailed test? A) to reject the null hypothesis B) to retain the null hypothesis C ...
In a poker hand consisting of 5 cards find the probabilty of holding 2 aces and 3 jacks In how many ways can you pick 5 different questions from a test bank contsisting of 15 questions? 3 dice are thrown find the probabi ...
Imagine that I had two drugs, X and Z. I administered the drugs to people with sleep difficulties for one month. The mean amount of sleep difficulties reported in the drug X group in the past month was 3.44 (SD = 2.34) a ...
The length of timber cuts are normally distributed with a mean of 95 inches and a standard deviation of 0.52 inches. In a random sample of 45 boards, what is the probability that the mean of the sample will be between 94 ...
Military often provides a form of qualification test for people to enter special career fields. Suppose that a large number of people have taken a test for a certain career field. Suppose that the mean of all people taki ...
What is the 99% confidence interval for a sample of 52 seat belts that have a mean length of 85.6 inches long and a standard deviation of 3.8 inches?
List the three assumptions of the independent groups t-test. The consequences of violating which assumption are exacerbated if you have unequal N
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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