9. Suppose that a certain ophthalmic trait is associated with eye color. 300 people are studied Randomly

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9. Suppose that a certain ophthalmic trait is associated with eye color. 300 people are studied Randomly selected with the results shown below:

a) What is the probability that a randomly selected person has blue eyes?

b) What is the probability that a randomly selected person has the trait?

c) Are events A (has blue eyes) and B (have the trait) independent? Justify your reply.

d) How are the two events A (he has blue eyes) and C (he has brown eyes) related; independent, mutually exclusive, complementary or all?

Type of Eye Color
Characteristic	Blue	Brown	Other	Total
Yes	70	30	20	120
No	20	110	50	180
Total	90	70	70	300

Related Book For answer-question

Elementary Statistics

ISBN: 978-0538733502

11th edition

Authors: Robert R. Johnson, Patricia J. Kuby

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Posted Date: Nov 14, 2020 06:40 AM

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9. Suppose that a certain ophthalmic trait is associated with eye color. 300 people are studied Randomly

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Elementary Statistics

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