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Statistics

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A study found that 82% of elementary students buy lunch at school at least once a month. How large a sample would be necessary to estimate the true proportion within four percentage points with 95% confidence

  • Statistics -

    n = (z/2 )^2 * pq/E^2
    n = (1.96)^2 *0.82*0.18/0.04^2
    n = ?

  • Statistics -

    zero is the answer

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