### Home > PC > Chapter 7 > Lesson 7.3.3 > Problem 7-122

7-122.

Álex Rodríguez gets a hit

Draw a tree diagram to show the possible outcomes of Rodríguez coming to bat three times.

Tree with 2 branches labeled 0.7 & 0.3, each splits into the same 2 branches, each of the 4 branches split into the same 2 branches again.

Find the probability Rodríguez gets

hits. Added to tree diagram, shading on 3 top branches each labeled 0.7.

Find the probability Rodríguez gets

hits. Added to tree diagram, shading on 3 bottom branches each labeled 0.3.

Find the probability Rodríguez gets

hit. 3 possibilities. Find each and take their sum.

Added shading on top 3 branches

Find the probability Rodríguez gets

hits. 3 possibilities. Find each and take their sum.