Length | Frequency |
\[0\le t<20\] | 17 |
\[20\le t<40\] | 38 |
\[40\le t<60\] | 19 |
\[t\ge 60\] | 4 |
A) 0.137
B) 0.317
C) 0.731
D) 0.371
Correct Answer: C
Solution :
(c): TV commercial show between 20 seconds and 1 minute = 57 times Total = 78 \[n\left( P \right)=\frac{57}{78}=0.731\]You need to login to perform this action.
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