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23 September, 13:01

When finding the margin of error for the mean of a normally distributed population from a sample, what is the critical probability, assuming a confidence level of 58%?

a. 0.21b. 0.42c. 0.58d. 0.79

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Answers (2)
  1. 23 September, 13:05
    0
    The awnser on edge is A) 0.21
  2. 23 September, 13:20
    0
    When confidence level c is given to us then the critical probability for finding Margin of error is

    α/2 which is evenly distributed at the both ends of Normal curve

    Where α = 1 - c

    Here we have given confidence level = 58%

    It means c = 58 / 100 = 0.58

    α = 1 - c

    α = 1 - 0.58

    α = 0.42

    Now the critical probability while finding margin of error is

    α/2 = 0.42/2 = 0.21

    The critical probability is a. 0.21
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