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A Marketing Firm Is Asked to Estimate the Percent of Existing

Question 50

Multiple Choice

A marketing firm is asked to estimate the percent of existing customers who would purchase a "digital upgrade" to their basic cable TV service.The firm wants 99 percent confidence and an error of ± 5 percent.What is the required sample size (to the next higher integer) ?


A) 664
B) 625
C) 801
D) 957

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