In the United States, the probability that an adult between the ages of 45 and 64 did not have health insurance prior to Obamacare was 0.2. Suppose that you randomly selected 3 adults from this population. Let X be a discrete random variable that represents the number of individuals out of the 3 who did not have health insurance.

What are the possible outcomes of the random variable, X.

What is the probability that none of the 3 adults had health insurance?

What is the probability that all 3 of the adults had health insurance?

What is the mean, or expected number, of adults who do not have health insurance?

What is the standard deviation for the number of adults without health insurance?