Let X denote the number of VCRs sold during a random week by a certain store. The probability functionof X isf(x)X00.61641 0.09562 0.03543 0.04614 0.2065W|Na) Calculate the expected number of VCRs sold in a random week.E[X] = 1.2307b) Calculate E[4X + 2] = 6.9228xX

Let X denote the number of VCRS sold during a random week by a certain store. The probability function of X is x f(x) 0 0.6164 1 0.0956 2 0.0354 3 0.0461 4 0.2065 a) Calculate the expected number of VCRs sold in a random week. E[X] = 1.2307 x b) Calculate E[4X + 2] = 6.9228 X

Let X denote the number of VCRS sold during a random week by a certain store. The probability function of X is x f(x) 0 0.6164 1 0.0956 2 0.0354 3 0.0461 4 0.2065 a) Calculate the expected number of VCRs sold in a random week. E[X] = 1.2307 x b) Calculate E[4X + 2] = 6.9228 X

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter10: Sequences, Series, And Probability

Section10.8: Probability

Problem 21E

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Question

Let X denote the number of VCRs sold during a random week by a certain store. The probability function
of X is
f(x)
X
0
0.6164
1 0.0956
2 0.0354
3 0.0461
4 0.2065
W|N
a) Calculate the expected number of VCRs sold in a random week.
E[X] = 1.2307
b) Calculate E[4X + 2] = 6.9228
x
X

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