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
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
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....
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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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