Mathematics, 26.03.2020 04:35 lizredrose5
3.36 An article in the Journal of the Electrochemical Society (Vol. 139, No. 2, 1992, pp. 524–532) describes an experiment to investigate the low-pressure vapor deposition of polysilicon. The experiment was carried out in a large-capacity reactor at Sematech in Austin, Texas. The reactor has several wafer positions, and four of these positions are selected at random. The response variable is film thickness uniformity. Three replicates of the experiment were run, and the data are as follows: Wafer Position Uniformity 1 2.76 5.67 4.49 2 1.43 1.70 2.19 3 2.34 1.97 1.47 4 0.94 1.36 1.65 (a) Is there a difference in the wafer positions? Use = 0.05. (b) Estimate the variability due to wafer positions. (c) Estimate the random error component. (d) Analyze the residuals from this experiment and comment on model adequacy.
Answers: 3
Mathematics, 21.06.2019 19:00, Patricia2121
Me with geometry ! in this figure, bc is a perpendicular bisects of kj. dm is the angle bisects of bdj. what is the measure of bdm? •60° •90° •30° •45°
Answers: 2
Mathematics, 21.06.2019 21:40, oprajapati
The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends more than a certain amount per visit at this supermarket. the expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of $95 and a standard deviation of $20. if the management wants to give free gifts to at most 10% of the customers, what should the amount be above which a customer would receive a free gift?
Answers: 2
3.36 An article in the Journal of the Electrochemical Society (Vol. 139, No. 2, 1992, pp. 524–532) d...
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