Assume that a discrete random variable X such that V(X) = 6.5. Find the value of V

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.8: Probability
Problem 31E
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a) Assume that a discrete random variable X such that V(X) = 6.5. Find the value of V(X-10)

b) In proof testing of circuit boards, the probability that any particular diode will fail is .01. Suppose a circuit board contains 400 diodes. Write the suitable approximate pmf for the number of diodes on a board that fail.

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