Question: 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:

105.6 90.9 91.2 96.9 96.5 91.3

100.1 105.0 99.6 107.7 103.3 92.4

Does this data suggest that the population mean reading under these conditions differs from 100? State and test the appropriate hypotheses testing α=.05. (5 points)