Question 1047106: 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
Found 2 solutions by ewatrrr, stanbon:
Answer by ewatrrr(24785)   (Show Source):
You can put this solution on YOUR website!
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.
----------------------
P(3 are overweight) = 20C3*0.04^3*0.06^17 = binompdf(20,0.4,3) = 0.123
-----------------
Cheers,
Stan H.
------------
|
|
|
