According to financial records, 24% of U. S. adults have more debt on their credit cards than they have money in their savings accounts. Suppose that we take a random sample of 100 U. S. adults. Let D = the number of adults in the sample with more debt than savings. Explain why D can be modeled by a binomial distribution even though the sample was selected without replacement.

Use a binomial distribution to estimate the probability that 30 or more adults in the sample have more debt than savings.

Justify why D can be approximated by a Normal distribution.

Use a Normal distribution to estimate the probability that 30 or more adults in the sample have more debt than savings.