SOLUTION: Assume the probability that you will make a sale on any given telephone call is 0.150.15. Find the probability that you​ (a) make your first sale on the fifth​ call, (b

Algebra.Com
Question 1105149: Assume the probability that you will make a sale on any given telephone call is 0.150.15. Find the probability that you​ (a) make your first sale on the fifth​ call, (b) make your sale on the​ first, second, or third​ call, and​ (c) do not make a sale on the first three calls
Answer by Boreal(15235)   (Show Source): You can put this solution on YOUR website!
This is 0.85^4*0.15=0.0783
Sale on the first call is 0.15
make first sale (note editing) on second call is 0.85*0.15=0.1275
Make first sale on third call is 0.85^2*0.15=0.1084
Make no sale on first three calls is 0.85^3=0.6141

RELATED QUESTIONS

Find the indicated probabilities using the geometric​ distribution, the Poisson​... (answered by ikleyn,greenestamps)
Find the indicated probabilities using the geometric​ distribution, the... (answered by robertb)
Find the indicated probabilities using the geometric​ distribution, the Poisson​... (answered by greenestamps)
Suppose the probability of making a sale on any given telephone call is 0.23. Find the... (answered by ewatrrr)
Suppose that 2500 customers subscribe to a telephone exchange. There are 80 trunk lines... (answered by CPhill)
Please help me solve thhis question: A salesperson has a policy of calling upon a... (answered by Theo)
A Professor estimates the probability that he will receive at least one telephone call at (answered by ewatrrr)
Suppose that the length of a telephone call (in minutes) is uniformly distributed between (answered by stanbon)
I really need help on this problem please! You choose an alpha level of .01 and then... (answered by ewatrrr)