Activity | \[{{\mathbf{T}}_{\mathbf{e}}}\] (days) | V \[{{\left( \mathbf{days} \right)}^{\mathbf{2}}}\] |
a | 17 | 4 |
b | 15 | 4 |
c | 8 | 1 |
A) 15.6%
B) 50.0%
C) 81.4%
D) 90.0%
Correct Answer: C
Solution :
\[\sum{{{T}_{e}}}=17+15+8=\]40 days \[\sum{V=4+4+1=9}\] \[\sigma =\sqrt{\sum{V}}=\sqrt{9}=3\] \[{{T}_{s}}\,=\] 43 days \[z=\frac{{{T}_{s}}-{{T}_{e}}}{\sigma }=\frac{43-40}{3}=1\] For z = 1, P = 0.8143 or 81.43%You need to login to perform this action.
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