According to the United States Centers for Disease Control, from 2005 to 2009 “ the drowning death rate among males (2.07 per 100,000 population) was approximately four times that for females (0.54 per 100,000 population).”
a. Express the rate for males as a percentage of the population; then explain why it is better expressed as a rate per 100,000 than as a percentage.
b. Find the relative risk of drowning for males compared to females. Write your answer in a sentence that would be understood by someone with no training in statistics.