Use the given data to find the minimum sample size required to estimate the population proportion. Margin of error: 0.007 ; confidence level :99% ; from a prior study,p is estimated by 0.199 Answer 151 12,497 19,413 (show workings) 5.Use the confidence level and sample data to find a confidence interval for estimating the population . Round your answer to the same number of decimal places as the sample mean. A group of 64 randomly selected students have a mean score of 37.4 with a standard deviation of 5.4 on a placement test. What is the 90% confidence interval for the mean score, , of all students taking the test? Answer 35.7 < < 39.1 36.3 < < 38.5 35.8 < < 39.0 36.1 < < 38.7 (show workings) 6.Assume that a sample is used to estimate a population proportion p. Find the margin of error E that corresponds to the given statistics and confidence level. Round the margin of error to four decimal places.