Assume that a population of thousands of people whose responses were used to develop the anxiety test had scores that were normally distributed with meand of 30 and standard deviation of 10. What...

Assume that a population of thousands of people whose responses were used to develop the anxiety test had scores that were normally distributed with meand of 30 and standard deviation of 10.  What proportion of people in this population would have anxiety scored within each of the following ranges of scoores?

below 20

above 30

between 10-50

below 10 or above 50