Multiple Choice
Police estimate that in one city 83% of drivers wear their seat belts.They set up a safety roadblock,stopping cars to check for seat belt use.If they stop 30 cars during the first hour,what is the standard deviation of the number of drivers expected to be wearing their seat belts?
A) 5.1
B) 24.9
C) 4.23
D) 2.06
E) 4.99
Correct Answer:

Verified
Correct Answer:
Verified
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