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What is the standard deviation for the number of contacts in eight attempts?

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A telephone survey uses a random digit dialing machine to call subjects. A random digit dialing machine is expected to reach a live person 15% of the time. What is the standard deviation for the number of contacts in eight attempts?

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