Answer:
Hence, the probability of a Negative test is
.
Step-by-step explanation:
(a)
Let
Drug user and
Test positive
Probability of drug users ![P(D)=36\%=0.36](https://tex.z-dn.net/?f=P%28D%29%3D36%5C%25%3D0.36)
![P(\frac{T}{D})=96\%=0.96](https://tex.z-dn.net/?f=P%28%5Cfrac%7BT%7D%7BD%7D%29%3D96%5C%25%3D0.96)
![P(\frac{T^c}{D^c})=90\%=0.90](https://tex.z-dn.net/?f=P%28%5Cfrac%7BT%5Ec%7D%7BD%5Ec%7D%29%3D90%5C%25%3D0.90)
(b)
Find the Probability of a Negative test,
![P(T^C)=P(\frac{T^C}{D^C})\cdot P(D^C)+P(\frac{T^C}{D})\cdot P(D)](https://tex.z-dn.net/?f=P%28T%5EC%29%3DP%28%5Cfrac%7BT%5EC%7D%7BD%5EC%7D%29%5Ccdot%20P%28D%5EC%29%2BP%28%5Cfrac%7BT%5EC%7D%7BD%7D%29%5Ccdot%20P%28D%29)
![\Rightarrow P(T^C)=0.9\cdot(1-0.36)+(1-0.96)\cdot 0.36](https://tex.z-dn.net/?f=%5CRightarrow%20P%28T%5EC%29%3D0.9%5Ccdot%281-0.36%29%2B%281-0.96%29%5Ccdot%200.36)
![\Rightarrow P(T^C)=0.9\cdot 0.64+0.04\cdot 0.36](https://tex.z-dn.net/?f=%5CRightarrow%20P%28T%5EC%29%3D0.9%5Ccdot%200.64%2B0.04%5Ccdot%200.36)
![\Rightarrow P(T^C)=0.576+0.0144](https://tex.z-dn.net/?f=%5CRightarrow%20P%28T%5EC%29%3D0.576%2B0.0144)
![\Rightarrow P(T^C)=0.5904](https://tex.z-dn.net/?f=%5CRightarrow%20P%28T%5EC%29%3D0.5904)
The greatest comment factor of 28 and 64 is 4.
The factors of 28 are 28, 14, 7, 4, 2, 1.
The factors of 64 are 64, 32, 16, 8, 4, 2, 1.
The common factors of 28 and 64 are 4, 2.
the greatest one of the two factors is 4.
The answer is letter d. The Fibonacci Sequence states to add the 2 previous number to get the next number starting with 1. So, 1 + 0=1, 1+1=2, 1+2=3, 2+3=5,3+5=8, 5+8=13, etc....
I added 13+21 to get 34. Then add 21+34 to get 55. Then add 34+55 to get 89.