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18 December, 11:27

All else being equal, a study with which of the following error ranges would be the most reliable?

A.) + / - 12

B.) + / - 6

C.) + / - 3

D.) + / - 9

+2
Answers (2)
  1. 18 December, 11:41
    0
    C. The most reliable would have the smallest margin of error
  2. 18 December, 11:54
    0
    Answer: Option C. + / -3

    Solution:

    The error range is most reliable if the width of the range is smaller:

    Width=w=2 Absolute value (error range)

    A.) w=2 Absolute value (+/-12) = 2 (12) →w=24

    B.) w=2 Absolute value (+/-6) = 2 (6) →w=12

    C.) w=2 Absolute value (+/-3) = 2 (3) →w=3

    D.) w=2 Absolute value (+/-9) = 2 (9) →w=18

    The smallest width is in option C.
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