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Mathematics, 13.11.2019 03:31 svarner2001
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 more than 30 minutes to complete the exam?
select one:
a. 0.9772
b. 0.8413
c. 0.5
d. 0.1587
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Answers: 3
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