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17 July, 12:33

The time required to finish a test in normally distributed with a mean of 40 minutes and a standard deviation of 8 minutes. What is the probability that a student chosen at random will finish the test in less than 48 minutes?

84%

2%

34%

16%

+5
Answers (1)
  1. 17 July, 14:14
    0
    84%. 68+13.5+2.5=84%.
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