Find E(R) and V (R)

Trigonometry (MindTap Course List)
10th Edition
ISBN:9781337278461
Author:Ron Larson
Publisher:Ron Larson
Chapter6: Topics In Analytic Geometry
Section6.4: Hyperbolas
Problem 5ECP: Repeat Example 5 when microphone A receives the sound 4 seconds before microphone B.
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Find E(R) and V (R) for a random variable R whose moment-generating function is
mR(t) = e2t(1-3t2)-1

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