The article "Effect of Microstructure and Weathering on the Strength Anisotropy of PorousRhyolite" (Y. Matsukura, K. Hashizume, and C. Oguchi, Engineering Geology, 2002:39-17) investigates the relationship between the angle betwween cleavage and flow structure andthe strength of porous rhyolite. Strengths (in MPa) were measured for a mumber ofspecimens cut at various angles. The mean and standard deviation of the strengths for eachangle are presented in the following table.Angle Mean0°22.9Sample SizeStandard Deviation2.981215°22.91.1630°19.73.0045°14.92.9960°13.52.3375°11.92.109014.33.956.Can you conclude that strength varies with the angle?

Answered: Image /qna-images/answer/eeb6b382-7267-4016-91a0-6fec886c34a7.jpg

Answered: The article "Effect of Microstructure…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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d Cut EE Copy ▼ H A 0 .00Conditional Format ste EEMerge & Center 00 a0 Format Painter Formatting- Table Number Clipboard Font Alignment Styles 27 Gi 110 parts made from alloy 1 and 46 parts made from alloy 2 were subjected to stress tests. 16 parts from alloy 1 and 14 parts from alloy 2 did not pass the test. Can we reject the hypothesis that the proportion of nonpassing parts from alloy 1 is at least as large as the proportion of nonpassing parts from alloy 2 at a-0.01? Assume independent samples Question 1 For the hypothesis stated above lin terms of alloy1- alloy2): Part A What is the decision rule? Fill in only one of the following statements. If the hypothesis is one tailed: If the hypothesis is twotailed: Reject Ho if nr What is the test statistic? 匚 Part B Question 2 Find the 90% confidence interval (in terms of alloy2-alloy!) Left Endpoint = Right Endpoint Ri
An article in the journal Materials Engineering (1989, Vol. II, No. 4, pp. 275–281) describes the results of tensile adhesion tests on 22 U-700 alloy specimens. The load at specimen failure is as follows (in megapascals): 19.8 10.1 14.9 7.5 15.4 15.4 15.4 18.5 7.9 12.7 11.9 11.4 11.4 14.1 17.6 16.7 15.8 19.5 8.8 13.6 11.9 11.4 The sample mean = 13.71, and the sample standard deviation is s = 3.55. find a 95% Confidence interval on μ.
.*.. 2] Document3 OFF AutoSave ^ 中。 Design Layout References Mailings Review >> Tell me 2 Sha sert Draw Calibri (Bo... 12 A^ A Aa v Ao Paragraph Create and Share Adobe PDF Dictate BIUVab x, x A Av Styles The boxplot below shows salaries for Construction workers and Teachers. Construction Teacher 25 35 45 55 40 Salary (thousands of $) 20 Jennie makes the first quartile salary for a construction worker. Markos makes the third quartile salary for a teacher. Who makes more money? of O Jennie O Markos How much more? $ 1 of 1 O words English (United States) JAN
6.1-2 1 help
An article contained the following observations on degree of polymerization for paper specimens for which viscosity times concentration fell in a certain middle range: 415 420 422 423 426 429 432 435 436 439 446 447 448 452 459 463 464 (a) Construct a boxplot of the data. 420 430 440 450 460 420 430 440 450 460 420 430 440 450 460 420 430 440 450 460 Comment on any interesting features. (Select all that apply.) There are no outliers. There is little or no skew. There is one outlien The data is strongly skewed. The data appears to be centered near 439. The data appears to be centered near 429. (b) Is it plausible that the given sample observations were selected from a normal distribution? O Yes ○ No (c) Calculate a two-sided 95% confidence interval for true average degree of polymerization. (Round your answers to two decimal places.) Does the interval suggest that 445 is a plausible value for true average degree of polymerization? O Yes ○ No Does the interval suggest that 451 is a…
SITUATION 2 (GROUPED DATA) The specification for a job calls for a class "B" mix with a minimum compressive strength of 3,000 psi at 28 days. The result of 125 compressive test are calculated in the following table. 28 days compressive strength (psi) 2,800 2,900 3,000 3,100 3,200 3,300 3,400 Number of Test 2 4 11 24 37 19 3,500 3,600 3,700 12 6 4 Answer the following. a. Construct a Frequency Distribution Table (CLASS SIZE = 100) LCB UCB CLASS FREQ. CM RF RFP(%) CF b. Determine the following: 1. Mean 2. Median 3. Mode 4. Standard Deviation
Instructions:Perform the following exercise in minitab. (in pictures)
In "Orthogonal Design for Process Optimization and Its Application to Plasma Etching" (Solid State Technology, May 1987), G. Z. Yin and D. W. Jillie describe an experiment to determine the effect of C,F. flow rate on the uniformity of the etch on a silicon wafer used in integrated circuit manufacturing. Three flow rates are used in the experiment, and the resulting uniformity (in percent) for six replicates is shown below. Observations C2F, Flow (SCCM) 2 3 4 125 2.7 4.6 2.6 3.0 3.2 3.8 160 4.9 4.6 5.0 4.2 3.6 4.2 200 4.6 3.4 2.9 3.5 4.1 5.1 Use Fisher's LSD method with a = 0.05 to analyze the means of the three flow rates. Choose the correct answer. O There are significant differences between levels 125 and 160. O There are significant differences between levels 125 and 200. O There are significant differences between levels 160 and 200. O There are significant differences between levels 125 and 160, 160 and 200. O No significant differences.
An article contained the following observations on degree of polymerization for paper specimens for which viscosity times concentration fell in a certain middle range: 415 420 421 422 426 427 432 434 437 438 446 447 450 452 457 463 464 (a) Construct a boxplot of the data. 420 430 440 450 460 420 430 440 450 420 430 440 450 460 420 430 440 450 460 Comment on any interesting features. (Select all that apply.) There is one outlier. n The data is strongly skewed. n The data appears to be centered near 428. n There are no outliers. n The data appears to be centered near 438. n There is little or no skew. (b) Is it plausible that the given sample observations were selected from a normal distribution? Yes o No (c) Calculate a two-sided 95% confidence interval for true average degree of polymerization. (Round your answers to two decimal places.) Does the interval suggest that 440 is a plausible value for true average degree of polymerization? o Yes o No Does the interval suggest that 456 is a…
In "Orthogonal Design for Process Optimization and Its Application to Plasma Etching" (Solid State Technology, May 1987), G. Z. Yin and D. W. Jillie describe an experiment to determine the effect of C2Fe flow rate on the uniformity of the etch on a silicon wafer used in integrated circuit manufacturing. Three flow rates are used in the experiment, and the resulting uniformity (in percent) for six replicates is shown below. Observations C„F. Flow (SCCM) 2 3 4 5 125 2.5 4.4 2.6 3.2 3.2 4.0 160 4.8 4.4 4.8 4.2 3.6 4.2 200 4.6 3.3 2.8 3.4 4.2 5.3 (a) Does C,F, flow rate affect etch uniformity? Construct box plots to compare the factor levels and perform the analysis of variance. Use a = 0.05. There is that flow rate affects etch uniformity. (b) Do the residuals indicate any problems with the underlying assumptions? No. Statistical Tables and Charts Yes.

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