1.) Suppose Bob flips a fair coin 100 times. Let X be the number of heads he gets. What is the variance of X?

Group of answer choices

A.) 25

B.) None of the other choices is correct

C.) Not enough information to answer

D.) 50

E.) 5

2.) Bob opens a bag containing M&Ms and counts the number of red M&Ms and records the results. True or False: This is a binomial random variable.

Group of answer choices

A.) True

B.) False

3.) Suppose 40% of banks have all tellers behind windows inside the bank. Five banks are selected. What is the chance that less than 2 of them have all tellers behind windows?

Group of answer choices

A.) None of the other choices is correct

B.) .3370

C.) .6826

D.) .4148