The random variable x representing the number of accidents

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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) 0.20 0.30 0.20 0.15 0.10 0.05

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?

1.00

0.70

0.50

Please show work.

Reference no: EM13613670

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