Question

Find P(C|Y) from the information in the table.

A 5-column table has 4 rows. The first column has entries A, B, C, Total. The second column is labeled X with entries 32, 6, 18, 56. The third column is labeled Y with entries 10, 5, 15, 30. The fourth column is labeled Z with entries 28, 25, 7, 60. The fifth column is labeled Total with entries 70, 36, 40, 146.

To the nearest tenth, what is the value of P(C|Y)?

0.4
0.5
0.7
0.8

Answer 1

P(C|Y) = P(C and Y) / P(Y) = 15 / 30 = 0.5.

Answer: 0.5