A telephone call center where people place marketing calls to customers has a probability of success...

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A telephone call center where people place marketing calls to customers has a probability of success of 0.06. Use the binomia What is the minimum number of marketing calls that need to be placed in order to ensure that there is a probability of approx

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Answer 1

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P(x>=5)=1-P(x<=4)

=1-binomdist(4,n,0.06,true)

Use above excel formula and try different values of n.

n	P(x>=5)
50	0.179
90	0.634
110	0.796
130	0.896
150	0.950
170	0.977

For n=130,we are 90% sure of obtaining five or more successful calls.

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Answer 2

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