MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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A physicist examines 10 water samples for iron concentration. The mean iron
concentration for the sample data is 0.711 cc/cubic meter with a standard deviation or
0.0816. Determine the 90% confidence interval for the population mean iron
concentration. Assume the population is approximately normal.
Step 1. Find the critical value that should be used in constructing the confidence
interval. Round your answer to three decimal places.
Answer:
Step 2. Construct the 90% confidence interval. Round your answer to three decimal
places.
Answer: Lower endpoint:
Upper endpoint:
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Transcribed Image Text:A physicist examines 10 water samples for iron concentration. The mean iron concentration for the sample data is 0.711 cc/cubic meter with a standard deviation or 0.0816. Determine the 90% confidence interval for the population mean iron concentration. Assume the population is approximately normal. Step 1. Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places. Answer: Step 2. Construct the 90% confidence interval. Round your answer to three decimal places. Answer: Lower endpoint: Upper endpoint:
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