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2. For a data set obtained from a random sample, n = 81 and x = 48.25. It is known that = 4.8. What is the point estimate of ?

2. For a data set obtained from a random sample, n = 81 and x = 48.25. It is known Â Â Â Â Â Â Â that Ïƒ = 4.8.What is the point estimate of Î¼? Round to two decimal placesMake a 95% confidence interval for Î¼. What is the lower limit? Round to two decimal places.Make a 95% confidence interval for Î¼. What is the upper limit? Round to two decimal places.What is the margin of error of estimate for part b? Round to two decimal places.

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