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OpenStudy (anonymous):
The time required to finish a test is normally distributed with a mean of 60 minutes and a standarddeviation of 10 minutes. What is the probability that a student will finish the test between 50 and 60minutes?
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OpenStudy (inkyvoyd):
I did a variation of this problem a while ago.
OpenStudy (inkyvoyd):
Remember the empircal rule.
OpenStudy (anonymous):
ok
OpenStudy (inkyvoyd):
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