In New York State, the mean salary for high school teachers in 2017 was $81,410 with a standard deviation of $9,500. Only Alaska’s mean salary was higher! Assume New York’s state salaries follow a normal distribution.

a. What percent of New York’s state high school teachers earn between $70,000 and $75,000?

b. What percent of New York’s state high school teachers earn between $75,000 and $90,000?

c. What percent of New York’s state high school teachers earn less than $60,000?