A test of depth perception is designed so that scores are normally distributed with a mean of

Question:

A test of depth perception is designed so that scores are normally distributed with a mean of 50 and a standard deviation of 10. Use the 68-95-99.7 rule to find the following values.
a. Percentage of scores less than 50
b. Percentage of scores less than 60
c. Percentage of scores greater than 70
d. Percentage of scores greater than 40
e. Percentage of scores between 40 and 70