Fr like i need my answers
Answer:
![P(X=3)](https://tex.z-dn.net/?f=%20P%28X%3D3%29)
And replacing we got:
Step-by-step explanation:
Let X the random variable of interest "number of times that we select a blue ball", on this case we now that:
The probability is always the same since we replace the ball selected in each trial.
The probability mass function for the Binomial distribution is given as:
Where (nCx) means combinatory and it's given by this formula:
And we want to find this probability:
![P(X=3)](https://tex.z-dn.net/?f=%20P%28X%3D3%29)
And replacing we got:
5/11, 2/3, 7/8. 5/11 is a little less than half, so that can be ruled out. 2/3 is equivalent to 4/6 which is less than 7/8.<span />
Answer:
The answer to your question is 2 buddy
Step-by-step explanation:
Yes, they are proportional because if you increase or decrease either amount they will both change. They will always have the same size. For example if I want to double the flour, I will have to double the milk as well because they have the same ratio.