Question: i need help with the middle one help please! illa Is approximately normally distributed with a = 6.2 and o = 0.5. Determine the magnitude

i need help with the middle one help please!

illa Is approximately normally distributed with a = 6.2 and o = 0.5. Determine the magnitude of earthquakes that make up the middle 85% of magnitude Construct the Margin of error and the Confidence Interval for c = 0.90, x = 18.4, o = 4.5, and n = 50 Find the Estimated margin of error and the mean from the confidence interval

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