Question

In: Statistics and Probability

A survey asked university students who wanted to go to an exchange program, which city they...

A survey asked university students who wanted to go to an exchange program, which city they will choose – London, Paris or Madrid. The exchange programs are only offered in the first and second year. The results are given below in the table.

London

Paris

Madrid

Total

1st year student

90

70

240

2nd year student

95

270

Total

170

a) Fill the table. What is the probability that a student chosen at random is a junior and did not select Madrid?

b) What is the probability that a student chosen at random selected London, given that the student is a senior (2nd year)?

c) It seems that Madrid becomes much more popular with second year students than in the first year. Can you figure out if being a second year student and choosing Madrid are independent events? Explain.

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