1. An STD clinic sees 10 people an hour. The actual probability of someone having an STD is 30%. What is the probability of getting 4 people with an STD in the next hour at the clinic?
2. On average, the fasting blood glucose for pregnant women is 80 with a standard deviation of 10. What is the probability that a pregnant woman has a fasting blood glucose level of less than 77?
3. There are 20 crew members at a given university. What is the probability that their mean BMI will be 2 units below the mean BMI for the population? Assume the standard deviation is 5 and the outcome is normally distributed in the population.