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Lynna [10]
3 years ago
8

Question 9

Mathematics
1 answer:
fiasKO [112]3 years ago
4 0

Answer:

3.85 (rounded to 4 cars)

Step-by-step explanation:

Let X be the discrete random variable the number of vehicles changing lanes

X~B(7, 0.55)

The expected value is found by:

E(X) = 7 × 0.55

E(X) = 3.85

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