Mathematics, 30.06.2019 01:50 genesis88
How large a sample size is needed to estimate the mean annual income of people in a certain county, correct to within $1300 with probability 0.99? no information is available about the standard deviation of their income. it is estimated that nearly all of the incomes fall between $0 and $180 , 000 and that this distribution is approximately bell-shaped.
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How large a sample size is needed to estimate the mean annual income of people in a certain county,...
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