The time taken to assemble a car in a certain plant is a random variable having a
normal distribution of 20 hours and a standard deviation of 2 hours. What is the
probability that a car can be assembled at this plant in a period of time
A. less than 19.5 hours?
b. between 20 and 22 hours?

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The Answer of The time taken to assemble a car in a certain plant is a random variable having a
normal distribution of 20 hours and a standard deviation of 2 hours. What is the
probability that a car can be assembled at this plant in a period of time
A. less than 19.5 hours?
b. between 20 and 22 hours?

The Time Taken to Assemble a Car in a Certain