4 Find the number of samples needed for a given significance level historic p know and desired margin of error Find the number of samples needed for a given significance level historic p unknown and desired margin of error Give those formulas Find the sample size needed for a significance level of 2 given a margin of error is 02 and the historic p value is 6 Find the sample size needed for a confidence level of 99 with a desired margin of error of 02 and NO historic p value Make up values and complete 4 more problems