In a sample of 1000 US adults, 186 dine out more than once per week. Two US adults are selected at random from the population of all US adults without replacement. Assuming the sample is representative of all US adults complete parts a through d
a. Find the probabiity that both adults dine out more than once per week.
b. Find the probability that neither adult dines out more than once per week.
c. Find the probability that at least one of the two adults dines out more than once per week. round to 3. Which of the events can be considered unusual?