iew Policies Current Attempt in Progress What sample size is needed to give a margin estimate that the population proportion is a Round your answer up to the nearest intege Sample size = Save for Later

Please give a detailed explanation, not just the response. If possible, a way to work out the problem in Excel is helpful! Thanks in advance! You want to obtain a sample to estimate a population proportion. At this point in time, you have no reasonable preliminary estimation for the population proportion. You would like to be 98% confident that you estimate is within 1% of the true population proportion. How large of a sample size is required? n=

Please do not give solution in image formate thanku The textbook suggests 20-25% of the data used for forecasting should be used as the hold-out sample. Why might you want to use significantly more or significantly less data as your hold-out? What considerations go into determining hold-out length?

divide a data set into four equal parts, whereas divide it into one hundred equal parts. Quartiles percentiles Percentiles quartiles Measures of variation measures of central tendency Fences Z-Scores