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Estimating the Confidence interval for population mean.

Noise level tests were done on 50 new light rail vehicles. The results of the test gave a sample mean of 75 decibels and a sample standard deviation of 8 decibels. Find out a 90 percent confidence interval for the mean decibel level µ for this type of transit vehicle.

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Category:- Statistics and Probability
Reference No.:- M919782

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