For Problem 19.27, determine the probability (assuming normal distribution) that a car w...

For Problem 19.27, determine the probability (assuming normal distribution) that a car would need engine maintenance between 70,000 and 90,000 miles.

Problem 19.27:

As a mechanical engineer working for an automobile manufacturer, you conduct a survey and collect the following data in order to study the performance of an engine that was designed many years ago. Plot the data and calculate the mean and standard deviation.