Question
A market researcher wishes to estimate the proportion of customers who would prefer a change in...
A market researcher wishes to estimate the proportion of customers who would prefer a change in packaging of their product. He wishes to have 90% confidence that his prediction is correct to within ± .04 of the population proportion. What sample size is needed?
a. 423
b. 258
c. 17
d. 349
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Answer #1
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