Which of these is not a proper probability distribution?

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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Which of these is not a proper probability distribution?

 

 

II
II
IV
P(a)
0.1
b
P(b)
0.11
P(c)
d
P(d)
0.12
a
-4
-3
-2
-1
0.12
0.22
0.21
0.12
0.13
0.16
0.18
0.17
-0.14
-3
-2
-1
0.15
0.17
0.25
0.15
0.17
0.26
0.11
0.26
0.22
0.11
0.16
0.03
0.11
0.31
0.03
0123 456
123 4 56
12
Transcribed Image Text:II II IV P(a) 0.1 b P(b) 0.11 P(c) d P(d) 0.12 a -4 -3 -2 -1 0.12 0.22 0.21 0.12 0.13 0.16 0.18 0.17 -0.14 -3 -2 -1 0.15 0.17 0.25 0.15 0.17 0.26 0.11 0.26 0.22 0.11 0.16 0.03 0.11 0.31 0.03 0123 456 123 4 56 12
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