Consider the population described by the probability distribution shown below. The random variable x is observed twice.

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Consider the population described by the probability distribution shown below.

The random variable x is observed twice. If these observations are independent, verify that the different samples of size 2 and their probabilities are as shown at the top of the next column.

a. Find the sampling distribution of the sample mean x

b. Construct a probability histogram for the sampling distribution of T.

c. What is the probability that 7 is 4.5 or larger?

d. Would you expect to observe a value of i equal to 4.5 or larger? Explain.

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Statistics For Business And Economics

ISBN: 9780130272935

8th Edition

Authors: James T. McClave, Terry Sincich, P. George Benson

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