The number of deaths caused by accidents on a stretch of motorway have been measured for the 30 years since its construction. The results are shown in the table below. Deaths 0 1 2 3 -Years 15 10 4 1 If X is the random variable representing the number of deaths, show that it has a Poisson distribution and determine its mean value and standard deviation.

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Q: Assume that adults have IQ scores that are normally distributed with a mean of μ= 105 and a standard…

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