SOLUTION: If the probability of passing a road test on the first try is 62%, what is the mean, variance and standard deviation if there are 54 people taking the road test?
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Question 1036355: If the probability of passing a road test on the first try is 62%, what is the mean, variance and standard deviation if there are 54 people taking the road test? Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! Binomial (2 outcomes)
Mean=np=0.62*54=33.48.
variance=np(1-p)=0.62*54*0.38=12.72
SD=sqrt(12.72)=3.57 (unrounded from above)
