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The miles-per-gallon obtained by the 1995 model Q cars is normally distributed with a mean of 22 miles-per-gallon and a standard deviation of 5 miles-per-gallon. What is the probability that a car will get less than 21 miles-per-gallon? (4 Decimal format = 0.0000).
By using the normal distribution to approximate the desired probability.
In order to test the assumption of a Poisson distribution, a random sample of 150 ten-minute intervals was taken.
The heights of children 2 years old are normally distributed with a mean of 32 inches and a standard deviation of 1.5 inches. Pediatricians regularly measure the heights of toddlers to determine whether there is a problem.
Election-day polls are taken from voting precincts selected because they are believed to be representative of all voters.
Determine expectation of number of vehicles passing through this specified point in ten minutes.
A random sample of 15 customers is selected, and the results are as follows: 8.02 4.08 5.79 8.73 5.47 5.64 8.01 10.49 8.35 5.9 9.66 9.91 3.82 6.68 6.17 a) calculate arithmetic mean, median, mode, first quartile and third quartile.
Compute a 99% confidence interval for the true average number of months taken by bankruptcy petitioners to acquire debts listed on their petitions.
Listed below is the selling price for a share of Coca Cola, at the close of the year. Determine the least squares trend equation.
The 99% confidence interval estimating the proportion of all students at the university who prefer outdoor exercise is given by which of the following?
What is the relationship between confidence intervals and hypothesis testing? How are they the same? How are they different?
At the .05 significance level, is there a difference in the proportion of viewers watching the three channels?
What quantitative method can be applied to help the Department make the decision? Outline how this method can be applied and explain how a qualitative method can also be applied to help the Department make the decision
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