Question

a sample of 500 adults were surveyed on their health. 102 of those studied have high blood pressure, yet 115 of those studied reported being unwilling to change their diet. Based on this sample, if an adult is chosen at random, what is the probability that he or she is open to trying to eat more healthfully? express your answer as a fraction in lowest terms

Answer 1

Since 115 are not willing to change their diet, the rest of the surveyed adults are open to eating more healthfully.

Therefore, the number of adults open to trying to eat more healthfully is

$500-115=385.$

Answer: If chosen at random, the probability that he/she is open to trying to eat more healthfully is:

$\frac{385}{500}=\frac{77}{100}\text{.}$