Question

Noise levels at 3 volcanoes were measured in decibels yielding the following data: 149, 163, 157 Construct 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.

          Noise levels at 3 volcanoes were measured in decibels yielding the following data:
149, 163, 157
Construct 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.

Noise levels at 3 volcanoes were measured in decibels yielding the following data:
149, 163, 157
Construct 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.

Added by Lisa A.

Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

Instant Answer

Solved by Expert David Nguyen

05/02/2022

Step 1

Given data: 149, 163, 157 Sample mean = (149 + 163 + 157) / 3 Sample mean = 469 / 3 Sample mean = 156.3 Show more…

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Noise levels at 3 volcanoes were measured in decibels, yielding the following data: 149, 163, 157. Construct the 95% confidence interval for the mean noise level at such locations. Assume the population is approximately normal. Step 1: Calculate the sample mean for the given sample data. Round your answer to one decimal place.