Three hundred college freshmen are observe to have grade point average that are approximately normally distributed with mean 2.1 and a standard deviation of 1.2. How many of these freshmen would you...

Three hundred college freshmen are observe to have grade point average that are approximately normally distributed with mean 2.1 and a standard deviation of 1.2. How many of these freshmen would you expect to have grade point averages between 2.5 and 3.5?