Number of accidents-probability distribution

Reference no: EM1322914

The following two questions (i.e., questions 1-2) refer to the following information:

The random variable X, representing the number of accidents in a certain intersection in a week, has the following probability distribution

x	0	1	2	3	4	5
P(X=x)	0.2	0.3	0.2	0.15	0.1	0.05

1. What is the probability that in a given week there will be at most three accidents?

a) 0.70

b) 0.85

c) 0.35

d) 0.15

e) 1.00

2. By the third day of a particular week, 2 accidents have already occurred in the intersection. What is the probability that there will be less than a total of 4 accidents during that week?

a) 1.00

b) 0.90

c) 0.85

d) 0.70

e) 0.50

Reference no: EM1322914

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