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Math Help - Engineering statistics help #2

  1. #1
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    Wink Engineering statistics help #2

    Engineers are studying heat loss in waste water treatment clarifiers during winter season. A comparison test (measured in BTU/ sq-ft) on clear days in two cities was conducted in St. Joseph and Chicago. The results are listed in the chart below.
    a) Establish a 95% CI for the mean heat transfer difference for the listed day long test data.
    b) Interpret the results.

    Date
    St. Joseph
    Chicago
    Dec. 21
    782
    593
    Jan 6
    965
    672
    Jan 21
    948
    750
    Feb 6
    1181
    988
    Feb 21
    1414
    1226
    Mar 7
    1633
    1462
    Mar 21
    1852
    1698

    Last edited by mr fantastic; April 17th 2010 at 08:53 PM. Reason: Edited post title
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