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Suppose that n = 100 and p = 0.5 for a binomial experiment. Find the P(x > 50) A. 0.5398 B. 0.6179 C. 0.4602 D. 0.3821 E. None of these

User Andrew Shooner
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1 Answer

16 votes
16 votes

we have that

P(x>50)=P(x=51)+P(x=52)+P(x=53)+.....P(x=100)

so


P(x=51)=(100!)/(51!(100-51)!)*0.5^((51))*0.5^((49))

P(x=51)=0.0780

User Hui Wang
by
2.6k points