Use Central Limit Theorem. A manager for a dollar store finds that approximately 3 out of every 15 customers pick up small items displayed near the checkout lines while waiting in line to pay for their purchases. A random sample of 50 customers who waited in line to pay for their purchases was selected.

1. What is the probability that none of them will pick up a small item displayed near the checkout?(1 mark)
2. What is the probability that between 10% and 20% will pick up a small item displayed near the checkout?(1 mark)
3. What is the probability that more than 25% of them will pick up a small item displayed near the checkout?(1 mark)