Elementary Statistics: A Step-by-Step Approach with Formula Card 9th Edition

Published by McGraw-Hill Education
ISBN 10: 0078136334
ISBN 13: 978-0-07813-633-7

Chapter 5 - Discrete Probability Distributions - 5-3 The Binomial Distribution - Exercises 5-3 - Page 284: 11

Answer

$0.071$

Work Step by Step

$p=0.75, n=7$ $P(X\leq3)=_7C_00.75^00.25^7+_7C_10.75^10.25^6+_7C_20.75^20.257^5+_7C_30.75^30.25^4=0.071$
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