Introductory Statistics 9th Edition

Published by Wiley
ISBN 10: 1-11905-571-7
ISBN 13: 978-1-11905-571-6

Chapter 5 - Section 5.3 - Mean and Standard Deviation of a Discrete Random Variable - Exercises - Page 193: 5.25

Answer

Mean =μ = $∑xP(x)$ = 0.5001 Thus, it is expected that 0.5001 from these 12 persons are left-handed, with the standard deviation of 0.5840. Standard Deviation = $\sqrt∑x^{2}P(x) -μ^{2}$ = $\sqrt 0.5911-0.5001^{2}$ =0.5840

Work Step by Step

see above.
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