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1) Suppose that is normally distributed with a mean of 20 and a standard deviation of 3. What is P(16.91 ≤x≤ 24.59)?
2) The length of time needed to complete a certain test is normally distributed with mean 31 minutes and standard deviation 6 minutes. Find the probability that it will take less than 40 minutes to complete the test.
3) Find a value of c so that P(Z ≤ c) = 0.52.
4) Consider a spinner that, after a spin, will point to a number between zero and 1 with "uniform probability". Determine the probability: P(1⁄6 ≤ X ≤ 17⁄30).
The hypothesis is that the average number of customers served per hour is 24 or less against the alternative hypothesis that the mean number of customers waiting is greater than 24.
The airplane will make a successful flight if at least 50 percent of its engines remain operative. For what values of p is a 4-engine plane preferable to a 2-engine plane?
Write a brief research report based on an analysis of the data file - describe the demographic characteristics of my sample and how the data were collected
suppose that a particular candidate for public office is in fact favored by 48 of all registered voters in the
For a binomial probability experiment, if p is 0.1 and n is only 150, we cannot use the normal approximation to the binomial distribution without continuity correction.
assuming you are dealt a pocket pair determine the probability that the flop 3 cards d. contains at least 1 card of
question suppose that x xijnx2 is an observed data matrix from a bivariate normal distribution nmusigma2i where i is
Find a two-way ANOVA. Find an example of a two-way ANOVA on the Web. The Journal of the American Medical Association (jama.ama-assn.org), Science Magazine (www.sciencemag.org), the Canadian Medical Association Journal (www.cmaj.ca), and the Journa..
The rejection region for a two-tail test that uses the standard normal distribution is that area under the distribution lying
the following data lists the average monthly snowfall for january in 15 cities around the us38 0 47 32 42 31 40 47 35
How large a sample is needed to estimate the true proportion of homeowners who have snow blowers to within 5% using a 98% confidence level?
Construct a 95% confidence interval estimate of the proportion of deaths in the week before the holiday to the total deaths in the week before and the week after the holiday.
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