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10 July, 12:52

A population consists of 200 elements. we want to draw a simple random sample of 40 elements from this population. on the first selection, the probability of an element being selected is

+5
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  1. 10 July, 14:46
    0
    The way to calculate probability is

    Probability (event) = number of outcome favorable to event / total number of possible outcome

    So we substitute the numbers in

    P (an element selected) = 40/200

    Now simplify the fraction.

    Answer = 1/5
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