Question: With the same data as in the previous question, test the hypothesis that there is no discrepancy between the two analysts. Previous question Two analysts

With the same data as in the previous question, test the hypothesis that there is no discrepancy between the two analysts.


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Two analysts measure the percentage of ammonia in a chemical process over 9 days and find the following discrepancies between their results:

1 2 3 4 9 Day 5 6 7 8 Analyst A 12.04 12.37 12.35 12.43 12.34 12.36 12.48 12.33 12.33 Analyst B 12.18 12.37

Investigate the mean discrepancy θ between their results and in particular give an interval in which you are 90% sure that it lies.

1 2 3 4 9 Day 5 6 7 8 Analyst A 12.04 12.37 12.35 12.43 12.34 12.36 12.48 12.33 12.33 Analyst B 12.18 12.37 12.38 12.36 12.47 12.48 12.57 12.28 12.42

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