A new process has been developed for applying photoresist to
125-mm silicon wafers used in manufacturing...
70.2K
Verified Solution
Link Copied!
Question
Basic Math
A new process has been developed for applying photoresist to125-mm silicon wafers used in manufacturing integrated circuits.Ten wafers were tested, and the following photoresist thicknessmeasurements (in angstroms x1000) were observed: 13.3987, 13.3957, 13.3902, 13.4015, 13.4001, 13.3918, 13.3965,13.3925, 13.3946, and 13.4002. (a) Test the hypothesis that mean thickness is 13.4 x 1000Å. Use =0.05 and assume a two sided alternative. (b) Find a 99% two-sided confidence interval on mean photoresistthickness. Assume that thickness is normally distributed. (c) Does the normality assumption seem reasonable for thesedata?
Answer & Explanation
Solved by verified expert
4.5 Ratings (612 Votes)
Part a Here we have to use one sample t test for the population mean H0 134 versus Ha 134 This is a two tailed test From given data we have Sample mean Xbar 1339618 Sample standard deviation S 0003908623 Sample size n 10 Degrees of freedom n 1 10 1 9
See Answer
Get Answers to Unlimited Questions
Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!
Membership Benefits:
Unlimited Question Access with detailed Answers
Zin AI - 3 Million Words
10 Dall-E 3 Images
20 Plot Generations
Conversation with Dialogue Memory
No Ads, Ever!
Access to Our Best AI Platform: Zin AI - Your personal assistant for all your inquiries!
