Question 1120711: 41% of men consider themselves professional baseball fans. You randomly select 10 men and ask each if he considers himself a professional baseball fan. Find the probability that the number who consider themselves baseball fans is (a) exactly five, (b) at least six, and (c) less than four.
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! 41% of men consider themselves professional baseball fans. You randomly select 10 men and ask each if he considers himself a professional baseball fan. Find the probability that the number who consider themselves baseball fans is
(a) exactly five
P(x = 5) = 10C5*0.41^5*0.59*5 = binompdf(10,0.41,5) = 0.2087...
----------
(b) at least six
P(6<= x <=10) = 1-binomcdf(10,0.41,5) = 0.1834..
-------------
(c) less than four.
P(0<= x <=3) = binomcdf(10,0.41,3) = 0.358....
------
Cheers,
Stan H.
-----------
|
|
|
