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Suppose that 200 customers of an airline were asked whether they preferred coffee of whether they preferred tea. 120 said that they preferred coffee.
coffee tea. total
male 112. 28 140
female 8 52 60
total 120 80 200
a) What is the probability a randomly selected customer prefers tea?
b) What is the probability a randomly selected customer is a female?
c) What is the probability a randomly selected customer is a female who prefers tea?
d) Suppose a randomly selected customer prefers tea. What is the probability the customer is a male?
e) Suppose a randomly selected customer prefers coffee. What is the probability the customer is a male?
f) Suppose a randomly selected customer is a female. What is the probability the customer prefers coffee?
g) Suppose a randomly selected customer is a female. What is the probability that the customer prefers tea?
h) Are the gender and drinking preferences independent?
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