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# 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.

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.

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