1. Suppose a researcher goes to a small college of 200 faculty,12 of which have blood type O- negative. She obtains a simple random sample of n = 20 of the faculty. Let the random variable X represent the number of faculty in the sample of size n = 20 that have blood type O-negative. a. What is the probability that 3 of the faculty have blood type O-negative? b. What is the probability that at least one of the faculty has blood type O-negative?

1. Suppose a researcher goes to a small college of 200 faculty,12 of which have blood type O- negative. She obtains a simple random sample of n = 20 of the faculty. Let the random variable X represent the number of faculty in the sample of size n = 20 that have blood type O-negative. a. What is the probability that 3 of the faculty have blood type O-negative? b. What is the probability that at least one of the faculty has blood type O-negative?

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section11.8: Probabilities Of Disjoint And Overlapping Events

Problem 2C

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