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Mathematics, 18.11.2020 17:30 adhanom12
Noise levels at 3 airports were measured in decibels yielding the following data:
108,146,160
Required:
a. Construct the 90% confidence interval for the mean noise level at such locations. Assume the population is approximately normal.
b. Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places.
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Noise levels at 3 airports were measured in decibels yielding the following data:
108,146,160
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