1. In semiconductor manufacturing, wet chemical etching is used to remove silicon from thebacks of wafers prior to metallization. Two different etching solutions have been compared,using two random samples of 8 wafers. The observed etch rates are given in the followingtableObservationSolution SolutionNumber291.5094.1889.1990.952392.1890.4695.3991.7989.07493.2197.1997.0491.0792.7594.7289.21Suppose that the two samples are independent and come from populations which are normallydistributed. Also, assume that their population variances are equal. Construct a 95% confidenceinterval for the difference between the two mean etching rates of the two solutions

First weed to calculate the Mean and standard deviation for both the samples Solution 1 : Count,…

1. In semiconductor manufacturing, wet chemical etching is used to remove silicon from the backs of wafers prior to metallization. Two different etching solutions have been compared, using two random samples of 8 wafers. The observed etch rates are given in the following table Observation Solution Solution 2 89.19 90.95 90.46 93.21 97.19 97.04 91.07 92.75 Number 91.50 94.18 92.18 95.39 91.79 89.07 94.72 89.21 3 4 6. Suppose that the two samples are independent and come from populations which are normally distributed. Also, assume that their population variances are equal. Construct a 95% confidence interval for the difference between the two mean etching rates of the two solutions

1. In semiconductor manufacturing, wet chemical etching is used to remove silicon from the backs of wafers prior to metallization. Two different etching solutions have been compared, using two random samples of 8 wafers. The observed etch rates are given in the following table Observation Solution Solution 2 89.19 90.95 90.46 93.21 97.19 97.04 91.07 92.75 Number 91.50 94.18 92.18 95.39 91.79 89.07 94.72 89.21 3 4 6. Suppose that the two samples are independent and come from populations which are normally distributed. Also, assume that their population variances are equal. Construct a 95% confidence interval for the difference between the two mean etching rates of the two solutions

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.6: Summarizing Categorical Data

Problem 31PPS

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