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Calculate the precision of the 90% Confidence Interval for the mean diamond price, assume the variance of diamond prices is 11,000,000. Calculated from the data

Calculate the precision of the 90% Confidence Interval for the mean diamond price, assume the variance of diamond prices is 11,000,000.

Calculated from the data provided.

n = 308

Mean =5,019 (calculated from the data)

This piece of data was given with the problem.

Variance of diamond prices = 11,000,000

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