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13 July, 12:53

Find the margin of error in estimating a binomial proportion for p=0.5 and n=400.

a. 0.049

b. 0.069

c. 1.96

d. 0.0012

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  1. 13 July, 13:00
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    The margin of error (MOE) can be calculated by using the formula:

    MOE = 1.96 sqrt [p (1 - p) / n]

    So substituting the values:

    MOE = 1.96 sqrt [0.5 (1 - 0.5) / 400]

    MOE = 0.049

    Therefore answer:

    A. 0.049
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