SOLUTION: On mornings when shool is in session in January, Sara notices that her school bus is late one-thrid of the time. What is the probability that during a 5-day school week in January

Algebra ->  Probability-and-statistics -> SOLUTION: On mornings when shool is in session in January, Sara notices that her school bus is late one-thrid of the time. What is the probability that during a 5-day school week in January      Log On


   

Question 112276: On mornings when shool is in session in January, Sara notices that her school bus is late one-thrid of the time. What is the probability that during a 5-day school week in January her bus will be late at least three times?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
On mornings when shool is in session in January, Sara notices that her school bus is late one-third of the time. What is the probability that during a 5-day school week in January her bus will be late at least three times?
-----------------
P(late) = 1/3
P(late at least 3 times in 5 days) = 1 - binomcdf(5,(1/3),2) = 0.209877
Cheers,
Stan H.