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It is known that the variance of a population equals 1296 a

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It is known that the variance of a population equals 1296. A random sample of 144 observations is going to be taken from the population.

a. With a 0.95 probability, what statement can be made about the size of the margin of error?

b. With a 0.95 probability, how large of a sample would have to be taken to provide a margin of error of 6 or less?

Reference no: EM13584828

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