The relative conductivity of a semiconductor device isdetermined by the amount of

Chapter 8, Problem 32

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The relative conductivity of a semiconductor device isdetermined by the amount of impurity doped into thedevice during its manufacture. A silicon diode to be usedfor a specific purpose requires an average cut-on voltageof .60 V, and if this is not achieved, the amount of impuritymust be adjusted. A sample of diodes was selectedand the cut-on voltage was determined. The accompanyingSAS output resulted from a request to test the appropriatehypotheses.N Mean Std Dev T Prob. . uTu15 0.0453333 0.0899100 1.9527887 0.0711[Note: SAS explicitly tests H0: m 5 0, so to test H0: m 5 .60,the null value .60 must be subtracted from each xi; thereported mean is then the average of the (xi 2 .60) values.Also, SASs P-value is always for a two-tailed test.] Whatwould be concluded for a significance level of .01? .05? .10?

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