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
Correct Answer:
Verified
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