Exhibit 4-1

Multiple Choice

Exhibit 4-1.Two hundred people were asked if they had read a book in the last month.The accompanying contingency table,cross-classified by age,is produced. Refer to Exhibit 4-1.Given that a respondent read a book in the last month,the probability that he/she is at least 30 years old is closest to ________.

A) 0.33
B) 0.46
C) 0.65
D) 0.88