The probability that a student drinks coffee is 0.50; the probability that a student ride a...
The probability that a student drinks coffee is 0.50; the probability that a student ride a bus to school is 0.30; the probability that a student does both is 0.20. Therefore, the frequency of drinking coffee and riding a bus to school are independent of one another. True Or False
Homework Answers
FALSE.
The events A and B are independent if P(A ∩ B) = P(A) P(B).
Let A and B be two events i.e the student drinks coffee and a student rides a bus to school.
P(A
B) = 0.2 i,e the Students does both
But, P(A).P(B) = 0.5* 0.3 = 0.15
Therefore, 0.15 
0.2
A and B are DEPENDENT.
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