Suppose the average speeds of passenger trains traveling from Newark, New Jersey, to Philadelphia, Pennsylvania, are normally distributed, with a mean average speed of 88 km per hour and a standard deviation of 6.4 km per hour. What is the probability that a train will average less than 70 km per hour? What is the probability that a train will average more than 80 km per hour? What is the probability that a train will average between 90 and 100 km per hour?
Suppose the average speeds of passenger trains traveling from Newark, New Jersey, to Philadelphia, Pennsylvania, are normally distributed, with a mean average speed of 88 km per hour and a standard deviation of 6.4 km per hour. What is the probability that a train will average less than 70 km per hour? What is the probability that a train will average more than 80 km per hour? What is the probability that a train will average between 90 and 100 km per hour?
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....
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Suppose the average speeds of passenger trains traveling from Newark, New Jersey, to Philadelphia, Pennsylvania, are
- What is the
probability that a train will average less than 70 km per hour? - What is the probability that a train will average more than 80 km per hour?
- What is the probability that a train will average between 90 and 100 km per hour?
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