1. (4 points) Consider nine unfair coins where the probability of obtaining a head on

each coin is 0.40.

a. (2 points) If these nine coins are flipped simultaneously, what is the probability of obtaining exactly four heads? Although you can use the tables at the end of the quiz, please show your work.

b. (2 points) Suppose now that there are 17 of these unfair coins that are being flipped simultaneously. What is the probability of obtaining between 6 and 8 heads (i.e., 6, 7, or 8 heads)? Again, please feel free to use the table at the end of the quiz.

(The tables being referred to are binomial probability tables)