What sample size would you use if you need a 95% confidence interval with a margin of error of no more than $4000 ? Use a planning standard deviation of $15785.93. 104 or more 104 or less 60 or more 60 or less Consider the sales data below: Assume sales forecast for Year 20 is 69.25. Using the seasonal factors (based on the past 4 years), forecast Year 20 sales by quarter. What is your sales forecast for Q4 of Year 20? 15.60 15.90 15.30 15.10