1. Students at a university were asked if they preferred classes online, face to face or mixed. Excluding the students who had no opinion, the probabilities of answers from a randomly selected student are as follows:

Online 0.13

Face to Face 0.32

Mixed 0.51

What are the probabilities that if three students are selected at random that:

a. They will all answer, ‘online’?

b. The First will answer ‘online’ and the other two ‘Mixed’?

c. One will answer ‘online’ and the other two ‘mixed’?

d. Exactly two will answer ‘Mixed’?

asked by guest
on Sep 21, 2024 at 9:51 am



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