to prove that 6720. Sin 40. Sin 60. 80 equals 3 you'd have to divide 16 by 20 multiply subtract both sides by 3 which is 24x + 6x + 8x + -14 equals 40 40 + 20 equals 16 - -40 equals 80 which equals to 3
I think b not sure it’s the only one that makes sense
Answer:
A
Step-by-step explanation:
Answer:
The variance for the number of tasters is 4.2
Step-by-step explanation:
For each person, there are only two possible outcomes. Either they are tasters, or they are not. The probability of a person being a taster is independent of any other person. So we use the binomial probability distribution to solve this question.
Binomial probability distribution
Probability of exactly x sucesses on n repeated trials, with p probability.
The variance of the binomial distribution is:
![V(X) = np(1-p)](https://tex.z-dn.net/?f=V%28X%29%20%3D%20np%281-p%29)
It is known that 70% of the American people are "tasters" with the rest are "non-tasters". Suppose a genetics class of size 20
This means that ![p = 0.7, n = 20](https://tex.z-dn.net/?f=p%20%3D%200.7%2C%20n%20%3D%2020)
So
![V(X) = np(1-p) = 20*0.7*0.3 = 4.2](https://tex.z-dn.net/?f=V%28X%29%20%3D%20np%281-p%29%20%3D%2020%2A0.7%2A0.3%20%3D%204.2)
The variance for the number of tasters is 4.2
Answer:
the first one
Step-by-step explanation: