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M211Q5 - (a exactly 2 of them have group A blood(b at least...

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MATH 211, Quiz # 5, 25/12/03 Name/Surname: …………………………. Signature: ……. . Student No: …………… Group: ……. . Question 1. According to data from Health Center, 20% of all students have group A blood. If 3 students are selected at random, what is the probability that
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Unformatted text preview: (a) exactly 2 of them have group A blood? (b) at least 1 of them has group A blood? Question 2. Given a random variable Z having the standard normal distribution, find (a) ( 1.28) P Z (b) ( 2.14 2.14) P Z-< < ....
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