A Sample of 12 Radon Detectors of a Certain Type $\alpha = .05$

question 56

Essay

A sample of 12 radon detectors of a certain type was selected, and each was exposed to 100 pCi/L of radon. The resulting readings were as follows:
109.6 94.9 95.2 100.9 100.5 95.3
105.1 110.0 103.6 111.7 107.3 96.4
Does this data suggest that the population mean reading under these conditions differs from 100? Use the Wilcox test with $\alpha = .05$ to test the relevant hypotheses.

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