Answered: )8 students from class A, 6 students…

)8 students from class A, 6 students from class B and 2 students from class C participate in some competition. What is the probability that exactly 2 out of 3 prize winners are from class B.

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Question

Probability theory ( solve tasks)

1)8 students from class A, 6 students from class B and 2 students from class C participate in some competition. What is the probability that exactly 2 out of 3 prize winners are from class B.

2) The probability that some event A happens at least once in 4 independent experiments is 0.9744. Find the probability of event A in a particular experiment.

3)Consider 10 independent observations. The probability of event A in a particular experiment is 0.2. Find the probability that event A occurs exactly 7 times.

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