Question: The average time to finish a certification exam is 2 hours and 40 minutes (160 mins) with a standard deviation equal to 25 minutes. Assume

The average time to finish a certification exam is 2 hours and 40 minutes (160 mins) with a standard deviation equal to 25 minutes. Assume normal distribution applies.

What is the probability that a random individual finishes the exam in exactly two hours (120 minutes ) ?

What is the probability that it takes a student less than 125 minutes to complete the test?

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60% of those who take a certification exam pass it. Assume binomial distribution applies. 10 people have registered to take the exam in June.

What is the probability that exactly 4 of them will pass the test?

What is the probability that more than three will fail the exam?

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