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

Question

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

Quizplus · Accepted Answer

The Answer of 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

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