Question 1. 7:11
Question 2. 27 units of K
How to solve the questions-
1. 14/22 divide the numerator and the denominator by 2. This would give you 7/11
2. If the ratio is 12/9 and the amount of N is 36, you’re basically multiplying 12 *3, so then you have to multiply 9 *3=27.
<span>1) A
2) B
3) D
I'm not sure though
</span>
Answer:
1. c
2. d
Step-by-step explanation:
ik this bc i previously had these questions on a test
4.325 kilograms
Take the decimal and move it 3 to the left
Answer:
0.3726 is the required probability.
Step-by-step explanation:
We are given the following information:
We treat blood sample testing positive for the virus as a success.
P( blood sample testing positive for the virus ) = 0.11
Then the number of blood sample follows a binomial distribution, where
![P(X=x) = \binom{n}{x}.p^x.(1-p)^{n-x}](https://tex.z-dn.net/?f=P%28X%3Dx%29%20%3D%20%5Cbinom%7Bn%7D%7Bx%7D.p%5Ex.%281-p%29%5E%7Bn-x%7D)
where n is the total number of observations, x is the number of success, p is the probability of success.
Now, we are given n = 4
We have to evaluate the probability of a positive result for four samples combined into one mixture mean that atleast one of the blood sample must be positive for virus.
![P(x \leq 1)\\1 - P(x = 0)\\= 1 - \binom{4}{0}(0.11)^0(1-0.11)^4\\=1-0.6274\\= 0.3726](https://tex.z-dn.net/?f=P%28x%20%5Cleq%201%29%5C%5C1%20-%20P%28x%20%3D%200%29%5C%5C%3D%201%20-%20%5Cbinom%7B4%7D%7B0%7D%280.11%29%5E0%281-0.11%29%5E4%5C%5C%3D1-0.6274%5C%5C%3D%200.3726)
0.3726 is the probability of a positive result for four samples combined into one mixture.