(Answered) Question birth order a survey of students in a large

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Question: Birth order. A survey of students in a large Introductory Statistics class asked about their birth order (1 = oldest or only child) and which college of the university they were enrolled in. Here are the data:

Suppose we select a student at random from this class.

a) What is the probability we select a Human Ecology student?

b) What is the probability that we select a firstborn student?

c) What is the probability that the person is firstborn and a Human Ecology student?

d) What is the probability that the person is firstborn or a Human Ecology student?

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