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A laboratory technician claims that on average it takes her no more than 7.5 minutes to...

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Basic Math

A laboratory technician claims that on average it takes her nomore than 7.5 minutes to perform a certain task. A random sample of20 times she performed this task was selected and the average andstandard deviation were 7.9 and 1.2, respectively. At ? = 0.05,does this constitute enough evidence against the technician'sclaim? Use the rejection point method.

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The Hypotheses areRejection regionReject Ho if T t    See Answer
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