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A geologist examines 6 seawater samples for lead concentration. The mean lead concentration for the sample...

A geologist examines 6 seawater samples for lead concentration. The mean lead concentration for the sample data is 0.903 cc/cubic meter with a standard deviation of 0.0566. Determine the 95% confidence interval for the population mean lead 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.

Math   Statistics-And-Probability   
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Answer #1

Refer t-table or use excel function "=T.INV.2T(0.05,5)" to find the value of t.

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