2. Suppose we have a fair coin and we toss it 5 times: (7.5 points each) a) what is the probability of getting exactly 3 heads and 2 tails? b) What is the probability of getting at least 1 tail? . . 2. Suppose that we investigated a fast food chain and saw that on average 6 out of 10 customers order drinks along with their meals. We choose 20 customers randomly, find the probability that: (5 points each) a) Exactly 10 customer order drinks with their meals. b) More than 15 customer order drinks with their meals. . c) What is the variance of the number of drinks? d) Name the distribution