A survey shows that about 70% of those over the age of 65 years old are in danger of catching COVID-19. If 9 persons over the age of 65 are randomly selected (assuming a binomial distribution), answer the following questions: Round all final answers to 3 decimal places and express answers in decimal form (i.e. 0.003 instead of 0.300%) (a) What is the probabilitiy that exactly 4 have COVID-19? (b) What is the probability that at most 7 have COVID-19? (c) What is the probability that at least 8 have COVID-19?

A survey shows that about 70% of those over the age of 65 years old are in danger of catching COVID-19. If 9 persons over the age of 65 are randomly selected (assuming a binomial distribution), answer the following questions: Round all final answers to 3 decimal places and express answers in decimal form (i.e. 0.003 instead of 0.300%) (a) What is the probabilitiy that exactly 4 have COVID-19? (b) What is the probability that at most 7 have COVID-19? (c) What is the probability that at least 8 have COVID-19?

College Algebra

10th Edition

ISBN:9781337282291

Author:Ron Larson

Publisher:Ron Larson

Chapter8: Sequences, Series,and Probability

Section8.7: Probability

Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....

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