Assume that police estimate that 13% of drivers do not wear their seatbelts. They set up a safety roadblock, stopping cars to check for seatbelt use. They stop 40 cars during the first hour. (a) Find the mean, variance, and standard deviation of the number of drivers expected not to be wearing seatbelts. Use the fact that the mean of geometric distribution is M=1/p and the variance is

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Asked Oct 23, 2019
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Assume that police estimate that 13% of drivers do not wear their seatbelts. They set up a safety roadblock, stopping cars to check for seatbelt use. They stop 40 cars during the first hour. 

(a) Find the mean, variance, and standard deviation of the number of drivers expected not to be wearing seatbelts. Use the fact that the mean of geometric distribution is M=1/p and the variance is

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Expert Answer

From the given information,

Probability for do not wearing ...

P(Not wearing seat belt)=0.13
Number of cars, n=40
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P(Not wearing seat belt)=0.13 Number of cars, n=40

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