Mathematics, 09.02.2022 14:30 oijhpl5085
A normal population has the mean of 20 and the variance of 100. A random sample of size is selected. (a) Find the standard deviation of the sample mean. (b) How large must the sample be if you want to halve the standard deviation
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A normal population has the mean of 20 and the variance of 100. A random sample of size is selected....
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