Answer: The relative conductivity of a semiconductor
Chapter 8, Problem 8.60(choose chapter or problem)
The relative conductivity of a semiconductor device is determined by the amount of impurity doped into the device during its manufacture. A silicon diode to be used for a specific purpose requires an average cut-on voltage of .60 V, and if this is not achieved, the amount of impurity must be adjusted. A sample of diodes was selected and the cut-on voltage was determined. The accompanying SAS output resulted from a request to test the appropriate hypotheses. N Mean Std Dev T ProbT 15 0.0453333 0.0899100 1.9527887 0.0711 [Note: SAS explicitly tests H0: 0, so to test H0: .60, the null value .60 must be subtracted from each xi ; the reported mean is then the average of the (xi .60) values. Also, SASs P-value is always for a two-tailed test.] What would be concluded for a significance level of .01? .05? .10? 3
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