Patient infringement case. Refer to the Chance (Fall 2002) study of a patent infringement...

Patient infringement case. Refer to the Chance (Fall 2002) study of a patent infringement case brought against Intel Corp., presented in Exercise 7.18 (p. 367). Recall that the case rested on whether a patent witness’ signature was written on top of key text in a patent notebook or under the key text. Using an X-ray beam, zinc measurements were taken at several spots on the notebook page. The zinc measurements for three notebook locations—on a text line, on a witness line, and on the intersection of the witness and text lines—are reproduced in the following table:

PATENT

a. Why might the Student’s t-procedure you applied in Exercise 9.20 be inappropriate for analyzing these data?

b. Use a nonparametric test (at α = .05) to compare the distribution of zinc measurements for the text line with the distribution for the intersection.

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c. Use a nonparametric test (at α = .05) to compare the distribution of zinc measurements for the witness line with the distribution for the intersection.

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d. From the results you obtained in parts b and c, what can you infer about the mean zinc measurements at the three notebook locations?

Exercise 7.18