Monthly food expenditures for families of four in a large city average $400 with a standard deviation of $80. Assuming the monthly food expenditures are normally distributed, what percentage of these expenditures are less than $300 or greater than $460?
Stanford-Binet IQ Test scores are normally distributed with a mean of 100 and a standard deviation of 16. Suppose you take the test and receive a score of 136. What percentage of people would receive a score higher than yours?