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Gideon3291
28.01.2020 •
Mathematics
Grade 12
18% of a population eats yogurt daily. what is the probability that, in a group of 10 people, 4 of them eat yogurt daily?
0.0032 0.072 0.067 0.00032
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Ответ:
The probability that, in a group of 10 people, 4 of them eat yogurt daily is 0.067
Step-by-step explanation:
In this case we can apply a Binomial distribution in which there are n events and every event have a probability p to get a success. Then, the probability of x is:
Where x is the number of people who eat yogurt daily, n is the total number of people and p is the probability of eats yogurt daily.
Additionally nCx is calculated as:
So, for the question we know that:
n=10
p=0.18
x=4
Replacing this values on the equation, we get:
P(4)=0.067
Finally, the probability that, in a group of 10 people, 4 of them eat yogurt daily is 0.067
Ответ:
Step-by-step explanation:
B