Cristofano decides to go into business for himself running a luxury car service. As his first order of business, he buys $20$ new black sports utility vehicles (SUV's), only to find out that two of them have a faulty power steering unit. Data from the carmaker show that one percent of this particular model of SUV are manufactured with a faulty power steering unit. **Why can't we safely use a normal approximation to the sampling distribution of a sample proportion to calculate the probability that two or more of the SUV's that Cristofano purchases would have a faulty power steering unit if the manufacturer's claim is true?** [[☃ radio 1]]