7. A tank contains 10 cm' of waters, which originally do not contain any micro-organism.A total of 1200 micro-organisms are randomly spread in the water by shaking themixture. Then 5 test tubes are filled with 10 cm of the mixture each. Find the probabilitythat(a) a certain test tube contains 2 micro-organisms,(b) exactly 3 out of 5 test tubes contain 2 micro-organisms,(c) all of the five test tubes contain 4 micro-organisms.

Answered: Image /qna-images/answer/16f6ff64-a0cf-49f6-9f10-21689bae93bc.jpg

Answered: (a) a certain test tube contains 2…

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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(a) a certain test tube contains 2 micro-organisms, (b) exactly 3 out of 5 test tubes contain 2 micro-organisms, (c) all of the five test tubes contain 4 micro-organisms.