(a) Use a computer program to calculate the proba-bility that more than 12 of 80 business telephone calls last longer than five minutes if it is assumed that 10 percent ofsuch calls last that long. (b) Can this result be used as evidence that the assump-tion is reasonable? Why?

Intermediate Algebra
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Chapter12: Sequences, Series And Binomial Theorem
Section12.3: Geometric Sequences And Series
Problem 12.58TI: What is the total effect on the economy of a government tax rebate of $500 to each household in...
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(a) Use a computer program to calculate the proba-
bility that more than 12 of 80 business telephone calls last
longer than five minutes if it is assumed that 10 percent of
such calls last that long.
(b) Can this result be used as evidence that the assump-
tion is reasonable? Why?
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