It is known that 25% of students in a particular village are smokers. A random sample of 20 of the students is selected. Using Excel or otherwise, (a) Determine the probability that there are EXACTLY 4 smokers in the sample (b) Determine the probability that there are at least 3 but no more than 6 smokers in the sample (c) Write down the expected number of smokers in the sample

It is known that 25% of students in a particular village are smokers. A random sample of 20 of the students is selected. Using Excel or otherwise, (a) Determine the probability that there are EXACTLY 4 smokers in the sample (b) Determine the probability that there are at least 3 but no more than 6 smokers in the sample (c) Write down the expected number of smokers in the sample

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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