Check my math question please? Very urgent!
posted by Melanie .
The commute times during rush hour traffic on a local interstate have a mean of 25 minutes and a standard deviation of 5 minutes. Repeated studies of this section of interstate are considered normally distributed. What percent of commuters drive between 20  25 minutes to work daily?
A) 16%
B) 32%
C) 34%
D) 50%
My answer choice is C

Check my math question please? Very urgent! 
Steve
correct
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Plz help check my answer!!?
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