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If the Standard Deviation for a Population Is Estimated to Be

Question 48

Multiple Choice

If the standard deviation for a population is estimated to be 3,the level of error is set at .25,and the confidence level sought is equal to 95%,what sample size is needed for an international market research study that is examining consumer satisfaction with a product? (Assume a scale of "1 = extremely dissatisfied" and "10 = extremely satisfied")


A) 350
B) 554
C) 756
D) 1670
E) 2274

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