Lenah2020 Lenah2020

23-12-2022
Mathematics

Answered

Noise levels at 5 airports were measured in decibels yielding the following data:162,176,162,141,159Construct the 90% confidence interval for the mean noise level at such locations. Assume the population is approximately normal.Step 1 of 4:Calculate the sample mean for the given sample data. Round your answer to one decimal place.Step 2 of 4:Calculate the sample standard deviation for the given sample data. Round your answer to one decimal place.Step 3 of 4:Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places.Step 4 of 4:Construct the 90% confidence interval. Round your answer to one decimal place.

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