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Let X, the number of flaws on the surface of a randomly selected boiler of a certain type, have a Poisson distribution with parameter ? = 5. Use the cumulative Poisson probabilities from the Appendix Tables to compute the following probabilities. (Round your answers to three decimal places.)
(a) P(X ? 8)
(b) P(X = 8)
(c) P(9 ? X)
(d) P(5 ? X ? 8)
(e) P(5 < X < 8)
Explain, to a person who has never had a course in statistics, what you have done. (c) Note the ways in which the means and standard deviations differ.
question determine the probability of a normally distributed data point being in the ranges indicated in the following
a 99 confidence interval for the mean of a normal population when the standard deviation ? is known is found to be 98.6
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the t- distribution for developing a confidence interval for a mean has degrees of
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What is the 95% confidence interval estimate for the difference between the mean reflectivity reading for Paint A and Paint B? Please complete the blank: "we can be 95% confident that the true difference between the actual means is?
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