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.

---

Definitions:

Least Squares Estimates

The estimates of the parameters in a regression model obtained by minimizing the sum of squared differences between observed and predicted values.

Regression Parameters

Coefficients that describe the relationship between independent variables and the dependent variable in regression analysis.

Square Feet

A unit of area measurement in the imperial system, equal to the area of a square with sides one foot in length.

Standard Error Of Estimate

A measure of the accuracy of predictions made with a regression model, specifically, it estimates the standard deviation of the error term.