Ok so I have a problem I am not sure of the method I should use. In a recent survey, 60% of the population disagreed with a given statement, 20% agreed and 20% were unsure. Find the probability of having at least 5 person who agree in a mini-survey with 10 people.(adsbygoogle = window.adsbygoogle || []).push({});

I tried to caculate the probability using a binomial distribution with n=10, p=0,2 agree and 1-p = 0,8 who either agree or are unsure, and

P(X) = (n!/ (k!(n-k)!)) (p^x) ((1-p) ^(n-x))

I added p(5), p(6)... p(10) and I got p(total) = 0,0328

Is it right to use a binomial distribution in this case?

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# Homework Help: Caculate the probability using a binomial distribution

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