A recent study revealed that the lengths of U.S. movies are normally distributed with a mean of 110 minutes and a standard deviation of 22 minutes. This means that the fraction of movies with lengths between a and b minutes (with a < b) is given by the integral

What percentage of U.S. movies are between 1 hr and 1.5 hr long (60–90 min)?

Transcribed Image Text:

e (х-110)/22){/2 dx. |22 V2т.