Question: STUDENT DROPOUT RATE Data released by the Department of Education regarding the rate (percentage) of ninth-grade students who don't graduate showed that, out of 50 states, 12 states had an increase in the dropout rate during the past 2 yr. 15 states had a dropout rate of at least 30% during the past 2 yr. 21 states had an increase in the dropout rate and/or a dropout rate of at least 30% during the past 2 yr.
a. How many states had both a dropout rate of at least 30% and an increase in the dropout rate over the 2-yr period?
b. How many states had a dropout rate that was less than 30% but that had increased over the 2-yr period?