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A television sports commentator wants to estimate the proportion of citizens who follow professional football. Complete parts (a) through (c) (a) What sample size should be obtained if he wants to be within 3 percentage points with 96% confidence if he uses an estimate of 54% obtained from a poll? The sample size is
Pollsters try to determine whether or not a person is a "likely voter" before they count their opinion in a poll. If we assume 40% of the registered voters will actually vote, in a random sample of 100 registered voters we can be 95% confident tha..
bob is selling 80 pound bags of fertilizer. the machine he uses have a standard deviation of fill equal to 1.5 pounds.
out of a total of 10 college textbooks estimate the standard deviation of their ages if the oldest textbook is known
let x be binaomial with parameters n 15 and p .2a find the expression for the density for xb find the expression for
a student observes the elevator usage of a building with a single elevator. this elevator will only allow people to go
Construct a 95% confidence interval for the population standard deviation. Test at the 5% level of significance that whether the variance of length of pipes is significantly different from the standards.
It seems that simulation could handle any situation or study. But is that always true? Discuss instances in which a simulation would be important and useful, and then a situation in which a simulation would not be appropriate.
a professor of mathematics refutes the claim that the average student spends 4.5 hours studying for the final
for each of the following distributions find the minimum usual value ? - 2? and the maximum usual value ? 2?.a.
A stock price is $30, the expected return is 18% per annum and the volatility is 20% per annum. What is the mean of the logarithm of the stock price in two years?
Choo Choo Paper Company makes various paper products. One of their products is a 30 mils thick paper. In order to ensure that the thickness of the paper meets the 30 mils specification
if you pick a card at random from a well-shuffled deck what is the probability that you get a spade or a
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