Statistic Question!! I have these four questions I'm having trouble solving... Could anyone write the solutions, but with steps on how they did it so I can possibly learn! Thanks a lot I'm pretty sure they use the binomial or poisson distribution formulas... can't get proper answers 1. In a large shipment of chips, 5% are defective. What is the probability that exactly two out of a sample of ten are defective? 2. On average, a system breaks down every 50hrs. Find the probability of more than two break-downs in a 24hr period. 3. Show that there are more families of 6 children split 4-2 than those with 3 boys and 3 girls. 4. People arrive at a bank at the rate of 60 per hour. Find the chance of getting 0,1,2 or 3 in the next minute.