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Let X represent the number of occupants in a randomly chosen car on a certain stretch of highway during morning commute hours. A survey of
LetXrepresent the number of occupants in a randomly chosen car on a certain stretch of highway during morning commute hours. A survey of cars showed that the probability distribution ofXis as follows.
x
1
2
3
4
5
P(x)
0.70
0.15
0.10
0.03
0.02
a)FindP(2).
b)FindP(More than 3).
c)Find the probability that a car has only one occupant.
d)Find the probability that a car has fewer than four occupants.
e)Compute the meanX.(Round answer to two decimal places.)
f)Compute the standard deviationX.(Round answer to three decimal places.)
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