Answer
P(X<8) + P(X>12) = 0.15+ 0.1 = 0.25
Work Step by Step
The probability that fewer than 8 or more than 12 use the lab in a given day is 0.25.
Elementary Statistics: A Step-by-Step Approach with Formula Card 9th Edition
by Bluman, Allan
Published by
McGraw-Hill Education
ISBN 10:
0078136334
ISBN 13:
978-0-07813-633-7
Chapter 5 - Discrete Probability Distributions - 5-2 Mean, Variance, Standard Deviation, and Expectation - Exercises 5-2 - Page 273: 9
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