The port of south Louisiana is the largest-tonnage port in the United States. In

Question

The port of south Louisiana is the largest-tonnage port in the United States. Inspectors randomly select ships at one of the facilities and check for safety violations. Past records indicate that 90% of all ships inspected have no safety violations. Suppose two ships are selected at random. What is the probability that both ships have safety violations? Write a Solution Trail for this problem. What is the probability that neither ship has a safety violation? What is the probability that exactly one ship has a safety violation? Snakes on a Plane India has reported the greatest number of venomous snake bites and fatalities in the world. The four snakes that reportedly do the most biting are the King Cobra, Indian Krait, Russell's Viper, and the Saw Scaled Viper. The snake bite fatality rate in India is 0.20.^30

Explanation / Answer

90% ships inspected have no safety violence

therefore probability of a ship to violate safety = 0.1

a)

probability of both ships having safety violations = 0.1 * 0.1 = 0.01

b)

probability that neither of the ships having safety violations = 0.9 * 0.9 = 0.81

c)

probability that exactly one ships having safety violations = 2 * 0.9 * 0.1 = 0.18

it can be also calculated as substracting the all other condition from 1

                                                                                                   = 1 - 0.01 - 0.81 = 0.18

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