Answer to Question #305281 in Statistics and Probability for She

Question

What is the probability that the number of pants sold is more than 3

Answer 1

Assumptions:

Let us assume number of pants = 10 and probability of pants sold is 0.65.

Using binomial distribution , let us find P(X>3).

Solution :

Using ti84 , press 2nd VARS and scroll down to binomcdf(n,p,x)

Enter n=100,p=0.65, x=3, we get$P(X\leq3)= 0.0260242$

Hence P(X>3)= 1-$P(X\leq3)$

=1-0.02602

=0.9739757