The time taken to assemble a car in a certain plant

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11) The time taken to assemble a car in a certain plant is a random variable having a normaldistribution of 20 hours and a standard deviation of 2 hours. What is the probability that a car canbe assembled at this plant in a period of time:a. less than 19.5 hours?b. between 20 and 22 hours?

Reference no: EM13720352

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