A journey takes a mean time of 5.5 hours with standard deviation of 0.5 hours. What is the probability that it takes between 5 and 6 hours, assuming a normal distribution?

University of Ilorin STA112 2025A past question

  1. 0.6826
  2. 0.7745
  3. 0.9544
  4. 0.8413

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