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#1 Use the confidence level and sample data to find a confidence interval for estimating the...

#1 Use the confidence level and sample data to find a confidence interval for estimating the population μ. Find the margin of error E and round your answer to the nearest tenth. Test scores: n = 93, LaTeX: \bar{x}x ¯ = 88.5, σ = 6; 99% confidence

#2 A sociologist develops a test to measure attitudes towards public transportation, and n = 82 randomly selected subjects are given the test. Their mean score is LaTeX: \bar{x}x ¯ = 75.9 and their standard deviation is s = 16.4. Find the margin of error E for the 95% confidence interval for the mean score of all such subjects, and round to the nearest tenth.

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