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х Pr Product .3 2 a .4 .4 2 7 h

х Pr Product .3 2 a .4 .4 2 7 h

A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Consider the following table: X Pr Product .3 2 а .4 .4 2 7 (a) Find the values of a, b, and c. (b) Find E[X].
Transcribed Image Text:Consider the following table: X Pr Product .3 2 а .4 .4 2 7 (a) Find the values of a, b, and c. (b) Find E[X].
Expert Solution
Step 1

Consider the given table,

X Pr Product=X×Pr
0 .3 0
2 a .4
5 .4 2
7 b c
Step 2

From the table,

2×a=.4⇒ a=.42        =.2

∑Pr=1

.3+a+.4+b=1

⇒b=1-.3+.2+.4      =.1

c=7×b  =.7

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