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The time taken to assemble a car in a certain plant has a normal distribution with mean of 25.4 hours and a standard deviation of
The time taken to assemble a car in a certain plant has a normal distribution with mean of 25.4 hours and a standard deviation of 4.1 hours. Calculate the probability that a car can be assembled at this plant in the following period of time:
- More than 28.8 hours
- Between 18.6 and 27.5 hours
- Between 25.0 and 34.0 hours
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