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Use the Following Information for Questions

Question 106

Multiple Choice

Use the following information for questions:
The average time taken to complete an exam, X, follows a normal probability distribution with mean = 60 minutes and standard deviation 30 minutes.
-What is the probability that a randomly chosen student will take at least an hour to complete the exam?


A) 0.1587
B) 0.5000
C) 0.8413
D) 0.9772

Correct Answer:

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