Question

Yaschin (1992) studied the thickness of metal wires produced in a chip-manufacturing process. Ideally, these wires should have a mean target thickness of 8 microns. The sample data are given below

3. Yaschin (1992) studied the thicknesses of metal wires produced in a chip-manufacturing process. Ideally. these wires should have a mean target thickness of ? = 8 microns. The sample data are given below: Sample Data: 8.4, 8.0, 7.8, 8.0, 7.9, 7.7, 8.0, 7.9, 8.2, 7.9, 7.9, 8.2, 7.9, 7.8, 7.9, 7.9, 8.0, 8.0, 7.6, 8.2, 8.1, 8.1, 8.0, 8.0, 8.3, 7.8, 8.2, 8.3, 8.0, 8.0, 7.8, 7.9, 8.4, 7.7, 8.0, 7.9, 8.0, 7.7, 7.7, 7.8, 7.8, 8.2, 7.7, 8.3, 7.8, 8.3, 7.8, 8.0, 8.2, 7.8 e) lgs the sample dtrndae of the histogram. (b) Compute the sample mean X and sample standard deviation S of the sample data. You may use R commands to do these computations. (d) Based on the 95% confidence interval for ? in (c), could you conclude that the value of ? differs from the target value of 8 microns?

Answer 1

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