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Birth order, take 2. Look again at the data about birth order of Intro Stats students and their choices of colleges shown in Exercise 6.
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a) If we select a student at random, what’s the probability the person is an Arts and Sciences student who is a second child (or more)?
b) Among the Arts and Sciences students, what’s the probability a student was a second child (or more)?
c) Among second children (or more), what’s the probability the student is enrolled in Arts and Sciences?
d) What’s the probability that a first or only child is enrolled in the Agriculture College? e) What is the probability that an Agriculture student is a first or only child?
Exercise 6
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. What is the probability that the person is:
a) a Human Ecology student?
b) a firstborn student?
c) firstborn and a Human Ecology student?
d) firstborn or a Human Ecology student?
Â
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