Chapter 5, Problem 15SE

Four Coin Tosses (Example 3) The sample space given here shows all possible sequences for tossing a fair coin 4 times. The sequences have been organized by the number of tails in the sequence.

a. How many outcomes are in the sample space?

b. Assuming all of the outcomes in the sample space are equally likely, find each of the probabilities:

i. all tails in 4 tosses

ii. only 1 tail in 4 tosses

iii. at most 1 tail in 4 tosses