Answer:
Estimation: 300
Exact Number: 263
Step-by-step explanation:
4464 → 4500
4201 → 4200
_____ _____
263 300
Always round to the nearest hundred whenever it does not say so otherwise.
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Answer:
0.3333 = 33.33% of this group likes chocolate
Step-by-step explanation:
Conditional Probability
We use the conditional probability formula to solve this question. It is
![P(B|A) = \frac{P(A \cap B)}{P(A)}](https://tex.z-dn.net/?f=P%28B%7CA%29%20%3D%20%5Cfrac%7BP%28A%20%5Ccap%20B%29%7D%7BP%28A%29%7D)
In which
P(B|A) is the probability of event B happening, given that A happened.
is the probability of both A and B happening.
P(A) is the probability of A happening.
Of the friends who like sprinkles, what proportion of this group likes chocolate:
So,
Event A: Likes sprinkles
Event B: Likes chocolate
15% of your friends like sprinkles (S) topping.
This means that ![P(A) = 0.15](https://tex.z-dn.net/?f=P%28A%29%20%3D%200.15)
5% of your friends like Chocolate (C) and also like sprinkles (S).
This means that ![P(A \cap B) = 0.05](https://tex.z-dn.net/?f=P%28A%20%5Ccap%20B%29%20%3D%200.05)
So
![P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.05}{0.15} = 0.3333](https://tex.z-dn.net/?f=P%28B%7CA%29%20%3D%20%5Cfrac%7BP%28A%20%5Ccap%20B%29%7D%7BP%28A%29%7D%20%3D%20%5Cfrac%7B0.05%7D%7B0.15%7D%20%3D%200.3333)
0.3333 = 33.33% of this group likes chocolate
Answer:
it is 40
Step-by-step explanation:
0.45 can go into 18 40 times
(2,3) is the only point that is a solution