We send 200 questionnaires by mail to carry out a survey. We know that the probability that a person returns the completed questionnaire is 0.32. What is the probability that at least 60 questionnaires are returned completed?

We send 200 questionnaires by mail to carry out a survey. We know that the probability that a person returns the completed questionnaire is 0.32. What is the probability that at least 60 questionnaires are returned completed?

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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We send 200 questionnaires by mail to carry out a
survey. We know that the probability that a person returns
the completed questionnaire is 0.32. What is the probability
that at least 60 questionnaires are returned completed?

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