Noise Levels At 5 Construction Sites Were Measured In Decibels Yielding The Foll
Noise levels at 5 construction sites were measured in decibels yielding the following data:
179,166,143,183,146
Construct the 99% 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