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26 June, 15:37

Which sample size will produce the widest 95% confidence interval, given a sample proportion of 0.5?

A.

80

B.

60

C.

70

D.

50

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Answers (1)
  1. 26 June, 15:46
    0
    D. 50

    Step-by-step explanation:

    Width: 2z * sqrt (var/n)

    Interval is wider when:

    z is higher

    n is smaller

    In the options, least value of n is 50
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