To monitor complex chemical processes, chemical engineers will consider key process indicators, which may be just yield but most often depend on several quantities. Before trying to improve a process, n=9 measurements were made on a key performance indicator.
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123
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106
|
114
|
128
|
113
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109
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120
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102
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111
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Conduct a test of hypotheses with the intent of showing that the mean key performance indicator is different from 107. Conduct this test at the 95% confidence level, and assume a normal population.