Question

Find the probability of at least three successes in six trails of a binomial experiment in which the probability of success is 50%
Round to the nearest tenth of a percent

Answer 1

H҉ E҉ R҉ E҉ 

 I҉ S҉ 

 U҉ R҉ 

 A҉ N҉ S҉ W҉ E҉ R҉  

⬇️⬇️⬇️⬇️⬇️⬇️⬇️

∑ 6Cr (1/2)6 for r = 3, 4, 5, 6 where 6Cr = the binomial coefficient of from 6 pick r.

 

On the off chance that you are unfamiliar with the ∑ notation, it means the sum of the terms for the values of r specified.

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≼H≽≼O≽≼P≽≼E≽ 

≼I≽≼T≽

 ≼H≽≼L≽≼P≽≼S≽

 ≼Y≽≼O≽≼U≽ 

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