Question 619563
In a city the probability that a person will pass his or her driving test the first attempt is 0.66. Four people are selected at Random from among those taking their driving test for the first time.
-----
Binomial Problem with n = 4 and p(pass) = 0.66
----- 

Determine the following:
a. The probability that exactly one person passed
P(x = 1) = 4C1*(0.66)*(0.34)^3 = binompdf(4,0.66,1) = 0.1038
----------------------------------------------------------------
b. The probability that at least two persons passed the test
P(2<= x <=4) = 1 - binomcdf(4,0.66,1) = 0.8829
=================================================
Cheers,
Stan H.