5.111 Obesity in Australia A report published in 2016 (www.

huffingtonpost.com.au) showed that 63.4% of Australian adults were overweight or obese in 2014–2015. When you randomly select two adults from the entire population for estimating the percentage of obese Australians, what is wrong in the following statements?

a. Three things can happen: none of them is overweight or obese; 1 of them is overweight or obese; both of them are overweight or obese. Since there are three possible outcomes, they each have probability 1/3.

b. The probability that only one of them is overweight or obese is 0.634 * (1 - 0.634).