3. A corporation has 21 manufacturing plants. Of these, 15 are domestic and 6 are located outside the United States. Each year a performance evaluation is conducted for 7 randomly selected plants. What is the probability that a performance evaluation will contain 4 plants from the United States? (8 points) 4. A company manufactures calculators on a dedicated production line that runs 24/7/365 (24 hours per day, 7 days per week, 365 days per year) and there is a 6.2 % defect rate of defects. Each calculator is independent of all other calculators. Find the probability of getting more than 1 defect in a random sample of 50 calculators (9 points).