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13 September, 19:30

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%

+4
Answers (1)
  1. 13 September, 21:37
    0
    84%. 68+13.5+2.5=84%.
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