The number X of days in the summer months that a construction crew cannot work because of the weather has the probability distribution: 6 8 0.15 0.08 | 0.03 9. 10 12 13 14 f{x) 0.2 0.19 0.16 0.1 | 0.07 | 0.02 The mean and standard deviation of X are respectively: 9.74 and 1.8954 9.7 and 1.9 None of the other options 9.79 and 1.8617

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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The number X of days in the summer months that a construction crew cannot work
because of the weather has the probability distribution:
|8
0.15
0.08
X
6
7
9
10
11
12
13
14
f{x)
0.03
0.2
0.1
0.02
0.19
0.16
0.07
The mean and standard deviation of X are respectively:
9.74 and 1.8954
9.7 and 1.9
None of the other options
9.79 and 1.8617
Transcribed Image Text:The number X of days in the summer months that a construction crew cannot work because of the weather has the probability distribution: |8 0.15 0.08 X 6 7 9 10 11 12 13 14 f{x) 0.03 0.2 0.1 0.02 0.19 0.16 0.07 The mean and standard deviation of X are respectively: 9.74 and 1.8954 9.7 and 1.9 None of the other options 9.79 and 1.8617
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