Question 1
Random samples of size 36 are taken from an infinite population whose mean and standard deviation are 20 and 15, respectively. The distribution of the population is unknown. The mean and the standard error of the mean are
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36 and 15
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20 and 15
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20 and 0.417
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20 and 2.5
Question 2
Random samples of size 49 are taken from a population that has 200 elements, a mean of 180, and a variance of 196. The distribution of the population is unknown. The mean and the standard error of the mean are
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180 and 24.39
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180 and 28
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180 and 2
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180 and 1.74