SOLUTION: A salesperson has 18% chance of making a sale to any customer called upon. If 6 calls were made what is the probability that
A) exactly 3 sales were made
B) at most one sale was
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-> SOLUTION: A salesperson has 18% chance of making a sale to any customer called upon. If 6 calls were made what is the probability that
A) exactly 3 sales were made
B) at most one sale was
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Question 1132283: A salesperson has 18% chance of making a sale to any customer called upon. If 6 calls were made what is the probability that
A) exactly 3 sales were made
B) at most one sale was made
C) at least two sales were made
D) what is the mean and standard deviation of the number of sales Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! 6C3*0.18^3*0.82^3=0.0643
at most one sale means one or 0. For 0, it is 0.82^6=0.3040
for 1 it is 6*0.18*0.82^5=0.4004
The probability is 0.7044
At least 2 sales is the complement to at most 1, and that would be 1-0.7044 or 0.2956
Mean is np=6*0.18=1.08
sd is sqrt (np(1-p))=sqrt (1.08*0.82)=0.9411
