Noise levels at 6 airports were measured in decibels yielding the following data: 136,158,164,150,155,154 Construct the 90% confidence interval for the mean noise level at such locations. Assume the population is approximately normal. Copy Data 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%90% confidence interval. Round your answer to one decimal place. Lower end point, upper end point
Noise levels at 6 airports were measured in decibels yielding the following data:
136,158,164,150,155,154
Construct the 90% confidence interval for the
Copy Data
Calculate the sample mean for the given sample data. Round your answer to one decimal place.
Calculate the sample standard deviation for the given sample data. Round your answer to one decimal place.
Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places.
Construct the 90%90% confidence interval. Round your answer to one decimal place. Lower end point, upper end point
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