A Gasoline Distributor Wonders Whether an Individual's Income Level Influences

Multiple Choice

A gasoline distributor wonders whether an individual's income level influences the grade of gasoline purchased.The following is a contingency table from a random sample of 300 individuals. The estimate of the expected number of individuals with income less than $30,000 who purchase regular gasoline when income and type of gasoline are independent is _______.

A) 60
B) 90
C) 120
D) 80
E) 100