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A cable television company wants to know the number of households owning 2 or more TV sets in a certain area.Setting a 90 percent confidence

A cable television company wants to know the number of households owning 2 or more TV sets in a certain area.Setting a 90 percent confidence limit, the company wants the true proportion to be estimated + 5 percent.A quick pilot survey revealed the proportion to be 0.6. How many households must be selected?

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