SOLUTION: If 80% of the applicants are able to pass a driver's proficiency road test, find the mean, variance, and standard deviation of the number of people who pass the test in a sample of
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Question 505925: If 80% of the applicants are able to pass a driver's proficiency road test, find the mean, variance, and standard deviation of the number of people who pass the test in a sample of 300 applicants. Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! If 80% of the applicants are able to pass a driver's proficiency road test, find the mean, variance, and standard deviation of the number of people who pass the test in a sample of 300 applicants.
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mean = np = 300*0.8 = 240
variance = npq = 240*0.2 = 48
std = sqrt(48) = 6.93
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Cheers,
Stan H.
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