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For a data set obtained from a sample, n = 75 and x = 48.30. It is known that = 4.4. a. What is the

For a data set obtained from a sample, n = 75 and x = 48.30. It is known that = 4.4.

a. What is the point estimate of ?

b. Make a 95% confidence interval for . Round your answers to two decimal places.

c. What is the margin of error of estimate for part b. Round your answer to three decimal places.

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