SOLUTION: Between the hours of 2 and 4pm, the average number of phone calls per minute coming into the switchboard of a company is 1.5. Find the probability that during a particular five-min

Algebra ->  Probability-and-statistics -> SOLUTION: Between the hours of 2 and 4pm, the average number of phone calls per minute coming into the switchboard of a company is 1.5. Find the probability that during a particular five-min      Log On


   

Question 614426: Between the hours of 2 and 4pm, the average number of phone calls per minute coming into the switchboard of a company is 1.5. Find the probability that during a particular five-minute period there will be
a. 0,
b. 2,
c. 4 or fewer,
d. More than 7,
phone calls.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi

Average Calls in 1.5/min OR 7.5/5min

Using stattrek.com Poisson Distribution Calculator: 7.5/5min average rate of success

a. P(x=0) = .0006

 b. P(x=2) = .0156

 c. P(x ≤4) = .1321

 d. P(x >7) = .4737