SOLUTION: Eight percent of all college graduates hired by companies stay with the same company for more than five years. The probability that in a random sample of 13 such college gradua

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Question 849950: Eight percent of all college graduates hired by companies stay with the same company
for more than five years. The probability that in a random sample of 13 such college
graduates hired recently by companies, exactly 3 will stay with the same company
for more than five years is:

Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

p = .08,  n = 13

using TI Calculator

P(x=3) = The syntax is binompdf(n, p, x-value)= binompdf(13, .08,3)

Or

 P = (.08)^3(.92)^10  

Note: The probability of x successes in n trials is: 

P (x)=  (p)^x(q)^(n-x) where p and q are the probabilities of success and failure respectively. 

In this case p = .08 & q  = .92

 = %28n%21%29%2Fx%21%28n+-+x%29%21%29 

 = 13%2A12%2A11%2F%283%2A2%29+=+286