A new process has been developed for applying photoresist to 125-mm silicon wafers used in manufacturing integrated
Question:
(a) Test the hypothesis that mean thickness is 13.4 × 1000 Å. Use a = 0.05 and assume a two-sided alternative.
(b) Find a 99% two-sided confidence interval on mean photoresist thickness. Assume
(c) Does the normality assumption seem reasonable for these data?
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Related Book For
Introduction to Statistical Quality Control
ISBN: 978-1118146811
7th edition
Authors: Douglas C Montgomery
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