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home / study / questions and answers / math / statistics and probability / sampling distribution of the variance. the age ... Question Sampling Distribution of the Variance. The age (in years) of the four U.S. presidents when they were assassinated in office are 56 (Lincoln), 49 (Garfield), 58 (McKinley), and 46 (Kennedy). Assuming that 2 of the ages are randomly selected with replacement, list the 16 different samples Find the mean of each of the 16 samples and then summarize the sampling distribution of the means in a table representing the probability distribution.

Explanation / Answer

Sampling distribution of mean is

Sample Mean (56,56) 56 (56,49) 52.5 (56,58) 57 (56,46) 51 (49,56) 52.5 (49,49) 49 (49,58) 53.5 (49,46) 47.5 (58,56) 57 (58,49) 53.5 (58,58) 58 (58,46) 52 (46,56) 51 (46,49) 47.5 (46,58) 52 (46,46) 46

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