Question

The following measurements (in picocuries per liter) were recorded by a set of ozone detectors installed...

The following measurements (in picocuries per liter) were recorded by a set of ozone detectors installed in a laboratory facility:

201.9,203.6,264.1,235.6,221.1 Using these measurements, construct a 90% confidence interval for the mean level of ozone present in the facility. Assume the population is approximately normal.

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Step 1 of 4:

Calculate the sample mean for the given sample data. Round your answer to two decimal places.

Step 2 of 4:

Calculate the sample standard deviation for the given sample data. Round your answer to two decimal places.

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 two decimal places.

Math   Statistics-And-Probability   
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https://drive.google.com/open?id=1M9tOs_0cSRaslplQcmguGrsjgps7jR6O

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