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StatisticsQ&A LibraryA physicist examines 4 seawater samples for iron concentration. The mean iron concentration for the sample data is 0.185 cc/cubic meter with a standard deviation of 0.0446. Determine the 80% confidence interval for the population mean iron concentration. Assume the population is approximately normal.Step 1 of 2 : Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places.Question

Asked Dec 6, 2019

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A physicist examines 4 seawater samples for iron concentration. The mean iron concentration for the sample data is 0.185 cc/cubic meter with a standard deviation of 0.0446. Determine the 80% confidence interval for the population mean iron concentration. Assume the population is approximately normal.

Step 1 of 2 :

Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places.

Step 1

Given data

Sample size(n) = 4

Sample mean = 0.185 cc/cubic

Sample standard deviation = 0.0446

Signi...

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