Question 322070: help please :) A survey indicates that 23% of US men select fishing as their favorite leisure activity.
a. is this a binomial distribution?
b. is it possible to use the table for this problem?
c. if you randomly select 5 men, find the probability that exactly two of the men liked fishing
d. again, if you randomly select 5 men, find the probability that at least 2 of the men liked fishing
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! A survey indicates that 23% of US men select fishing as their favorite leisure activity.
a. is this a binomial distribution?
Yes, because every man is either says yes or no when asked if fishing is his
fvorite leisure.
------------------------
b. is it possible to use the table for this problem?
Yes, a binomial table
------------------------
c. if you randomly select 5 men, find the probability that exactly two of the men liked fishing
P(x=2) = 5C2*0.23^2*0.77^3 = 0.2415
--------------------------------------------
d. again, if you randomly select 5 men, find the probability that at least 2 of the men liked fishing
P(2<= x <=7) = 1 - binomcdf(7,0.23,1) = 0.5040
========================
Cheers,
Stan H.
|
|
|
