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1. The time need to complete a final examination in a college course is normally distributed...

1. The time need to complete a final examination in a college course is normally distributed with a mean of 80 minutes and a standard deviation of 10 minutes.

  1. What is the probability of completing the exam in less than 60 minutes?
  2. What is the probability of completing the exam in less than 95 minutes?
  3. What is the probability of completing the exam in more than 75 minutes?
  4. What is the probability of completing the exam within 60 to 75 minutes?
  5. 35% of students complete the exam in less than what time?
  6. 95% of students complete the exam in less than what time?
  7. 10% of students complete the exam in more than what time?

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orchestra answered 3 years ago
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