Hi  

Recommend Using stattrek.com to check Your results

until You are familiar with Using Your Calculator.



1) One could also Use A Casio fx-115 ES plus 0r fx-991 ES plus. 

In a similar fashion..: Mode: DIST(binomial PD).



2) TI syntax for P(x-value) is binompdf(n, p, x-value).

P = .40, N = 20



1 p(X = 3) =  binompdf(20,.40,3) = .0123 0R 1.23%

2 P(X = 0) =  binompdf(20,.40,0) = .00004

Please use this as an opportunity to CHECK against YOUR work.

 

Answer by stanbon(75887)   (Show Source): You can put this solution on YOUR website!
  Statistics show that only 40% of South African women are overweight. Consider a randomly selected group of twenty South African women. Calculate the probability that three are overweight and none are overweight.

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P(3 are overweight) = 20C3*0.04^3*0.06^17 = binompdf(20,0.4,3) = 0.123

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Cheers,

Stan H.

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