The student Erwin wants to start his car. He knows that the battery has a 98% probability

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The student Erwin wants to start his car. He knows that the battery has a 98% probability of being in working order and that each of the four spark plugs has a 95% probability of firing. He also knows that his car will start if the battery and at least three of the spark plugs work. All events are independent when viewed in pairs. What is the probability that his car will start?

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