Answer:
Percentage of uncertainty=26%
Step-by-step explanation:
The solution and complete explanation for the above question and mentioned conditions is given below in the attached document.I hope my explanation will help you in understanding this particular question.
Answer: The expected waiting time is ![1\dfrac{2}{3}\ min](https://tex.z-dn.net/?f=1%5Cdfrac%7B2%7D%7B3%7D%5C%20min)
Step-by-step explanation:
Since we have given that
Average waiting time for slow elevator = 3 min
Average waiting time for fast elevator = 1 min
probability that a person choose the fast elevator = ![\dfrac{2}{3}](https://tex.z-dn.net/?f=%5Cdfrac%7B2%7D%7B3%7D)
Probability that a person choose the slow elevator = ![\dfrac{1}{3}](https://tex.z-dn.net/?f=%5Cdfrac%7B1%7D%7B3%7D)
So, the expected waiting time would be
![E[x]=\sum xp(x)=3\times \dfrac{1}{3}+1\times \dfrac{2}{3}\\\\=1+\dfrac{2}{3}\\\\=\dfrac{3+2}{3}\\\\=\dfrac{5}{3}\\\\=1\dfrac{2}{3}\ min](https://tex.z-dn.net/?f=E%5Bx%5D%3D%5Csum%20xp%28x%29%3D3%5Ctimes%20%5Cdfrac%7B1%7D%7B3%7D%2B1%5Ctimes%20%5Cdfrac%7B2%7D%7B3%7D%5C%5C%5C%5C%3D1%2B%5Cdfrac%7B2%7D%7B3%7D%5C%5C%5C%5C%3D%5Cdfrac%7B3%2B2%7D%7B3%7D%5C%5C%5C%5C%3D%5Cdfrac%7B5%7D%7B3%7D%5C%5C%5C%5C%3D1%5Cdfrac%7B2%7D%7B3%7D%5C%20min)
Hence, the expected waiting time is ![1\dfrac{2}{3}\ min](https://tex.z-dn.net/?f=1%5Cdfrac%7B2%7D%7B3%7D%5C%20min)
Hello,
A: 4 , 4 , 4 not right triangle
B: 4 , 6.93 , 8 or 4²+6.93²=64,0249 ≈64=8²
C: 11.2 , 16.2 , 19.2 or 11.2²+16.2²=387,88 =(19,69...)²
The best choice is B
Answer:13.2277
Step-by-step explanation:
Did it on iready