An article in the Journal of the American Ceramic Society, "Rapid Hot-Pressing of Ultrafine PSZ Powders" (1991, Vol. 74, pp. 1547-1553)considered the microstructure of the ultrafine powder of partially stabilized zirconia as a function of temperature. The data are shown below:...x = Temperature (°C) | 1100 1200 1300 1100 1500 1200 1300y - Porosity (%)30.8 19.2 6 13.5 11.4 7.7 3.6Find an estimate of o2Input answers up to two decimal places.o2= Blank 1

For the given data Find σ^2 =?

Answered: An article in the Journal of the…

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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Chemists examined the relationship between the maximum absorption rate y (in nanomoles) and the Hammell subsliuent constant x for metachyoophane compounds. The data are given below. Hammett Maximum Observation Constant Ahsorption 0.01 200 12 0.75 346 13 0.06 303 14 -0.26 314 15 0.17 301 0.42 332 -0.18 303 0.52 343 19 1.02 368 10 0.38 326 0.63 339 Summary quantities are Ey = 3574, E = 1188426, Ex, = 3.52, E x} = 2.7238, and x, V- 1226.27. Assume that the two variables are related according to the simple linear regression model. 1. The least squares estimate of the slope is .Round to 1 decimal place. 2. The least squares estimate of the intercept is . Round to 1 decimal place. 3. If the Hammett constant x is set to 0.17, what is the predicted maximum absorption? Round to 1 decimal place. 4. The observed value of maximum absorption at x = 0.17 is y = 301. What is the value of the coresponding residual? Round to 1 decimal place. 5. The totell sum of squares of y is and the error sum of…
Calculate the transmittance percentage (%T) of a sample that has a absorbance of 0.289 at 535nm. 75.2% 28.9% 51.3% 123.1% 48.7%
Scientists are looking at the effects of global warming on clutches of sea turtle hatchlings in different parts of the world. The data below has been collected: 1.Temperature of Incubation (in Kelvin) 2. Gender Group of Hatchling Clutch (0=0% male; 1= greater than 0% but less than or equal to 10% male; 2= greater than 10% but less than 20% male; 3= greater than 20% but less than or equal to 30% male and so on) 3. Number of hatched eggs 4. number of unhatched eggs 5. Location of Turtles (0=west North America; 1= west South America; 2= tropical regions of Pacific; 3= northwestern Atlantic; 4= Indian Ocean Which of the above variables are measured using a nominal scale, ordinal scale and ratio scale. (An answer can be none of variables) thank you
The following table shows the typical depth (rounded to the nearest foot) for nonfailed wells in geological formations in Baltimore County (The Journal of Data Science, 2009, Vol. 7, pp. 111-127). Geological Formation Group Number of Nonfailed Wells Nonfailed Well Depth Gneiss 1,515 255 Granite 26 218 Loch Raven Schist 3,290 317 Mafic 349 231 Marble 280 267 Prettyboy Schist 1,343 255 Other schists 887 267 Serpentine 36 217 Total 7,726 2,027 Let the random variable X denote the depth (rounded to the nearest foot) for nonfailed wells. Detemine the cumulative distribution function for X. Round your answers to four decimal places (e.g. 98.7654). x < 217 217
Q1) The relative density p of air was measured at various altitudes h. The results were below: h (km) 0.5 1.12 2.36 3.32 4.55 6.87 1 0.69 0.51 0.39 0.23 0.1 The p(h) = aebh to fit this data is: (Take 2 decimal places of accuracy) %3D
The article "Lead Dissolution from Lead Smelter Slags Using Magnesium Chloride Solutions" (A. Xenidis, T. Lillis, and I. Hallikia, The AusIMM Proceedings, 1999:37-14) discusses an investigation of leaching rates of lead in solutions of magnesium chloride. The data in the following table (read from a graph) present the percentage of lead that has been extracted at various times (in minutes). Time (t) 4 8 16 30 60 120 Percent extracted (v) |1.2 1.6 2.3 2.8 3.6 4.4 a. The article suggests fitting a quadratic model y = Bo + B,t + Bz² + ɛ to these data. Fit this model, and compute the standard deviations of the coefficients. b. The reaction rate at time t is given by the derivative dy/dt = B, + 2B,t. Estimate the time at which the reaction rate will be equal to 0.05. c. The reaction rate at t = Oisequal to B1. Find a 95% confidence interval for the reaction rate at t = 0. d. Can you conclude that the reaction rate is decreasing with time? Explain.
15. (Percentile, median) The pth percentile of a sample is a number Q, such that at least p% of the sample values are smaller than or equal to Q, and also at least (100 – p)% of those values are larger than or equal to Q. If there is more than one such number (in which case there will be an interval of them), the pth percentile is defined as the average of the numbers (midpoint of that interval). In particular, Q50 is called the middle quartile or median and is denoted by r. Find for the sample in Table 24.2 (Sec. 24.3).
An artide n the ACI Materials Journal (vol. 84, 1987, po. 213-216) describes several experiments investigating the rodding of concrete to remove trapped ar. Amch 6-inch cylinder was used, and the number of tumes this rod was used is the design variable The resulting compressive strength of the concrete specimen is the response. The data are shown n the following table. s the Compressive Strength (psi) Rodding Level Observations 10 1530 1530 1440 15 1610 1650 1500 20 150 1730 1530 25 1500 1490 1510 Calculate the test statistic fo Input answer up to 2 decimal places. Test StatisticfBlank 1 Blank 1 Add your answer
4. Draw graphs of the % change in moment of inertia against the change in dimension on the X-X axis and Y-Y axis Discuss and compare your results from the two samples. Section / Bar h = 25mm W = 12mm 7 bh² Section 2 (Pipe) Thiz hness= Diameter = 36" उसने 4x=54² 25m 12mm -36mm
c)
The following data were collected to determine therelationship between two processing variables and thehardness of a certain kind of steel: AnnealingHardness Copper content temperature(Rockwell 30-T) (percent) (degrees F)y x1 x278.9 0.02 1,00055.2 0.02 1,20080.9 0.10 1,00057.4 0.10 1,20085.3 0.18 1,00060.7 0.18 1,200Fit a plane by the method of least squares, and use it toestimate the average hardness of this kind of steel when the copper content is 0.14 percent and the annealing tem-perature is 1,100◦F.
Q4 The data in Table Q4 shows the results of the analysis on the effect of compressive strength to the grain on the resin-adjusted density for specimens of radiata pine. Table Q4: Effect of compressive strength Compressive 3224 2587 3785 3520 3083 2711 2241 1640 2081 1852 strength Density 31.2 26.6 | 35.8 | 33.7 31.2 30.8 26.4 18.5 23.1 21.7 (a) Sketch a scatter plot of the data. Then, interpret the relationship between the variables.

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