Question 8. Suppose that the sample for the customer survey under discussion is 500, and...
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Accounting
Question 8. Suppose that the sample for the customer survey under discussion is 500, and that 120 of the customers in the sample said that they supported the proposed sales tax increase.
Part A. Build a 90% confidence interval estimate of the population of customers who would support the proposed that increase. Hint, +/- Margin of Error
Part B. Suppose a margin of error of no more than 0.02 is targeted at 95% confidence level.
Calculate the appropriate sample size knowing that = 0.38.
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