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9. Consider an approximately normal distribution with a mean of 213 and a variance of 81. If a random sample of size 25 is taken

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9. Consider an approximately normal distribution with a mean of 213 and a variance of 81. If a random sample of size 25 is taken from this distribution and the sample mean is calculated, (a) Describe the sampling distribution of T. (b) Find the probability that a falls between 211 and 215. (c) Find the probability that i is greater than 216 or less than 210

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