2. Measurements were taken for entropy and enthalpy changes for many salts under a variety ofwater + methanol of NaCl (table salt) for several concentrations of methanol. Four independentconditions. The following table presents the results for enthalpy of transfer (in kJ/mol) from water tomeasurements were made at each concentration.Concentration (%)Enthalpy1.62 1.60 1.62 1.6651020302.69 2.66 2.72 2.733.56 3.45 3.65 3.523.35 3.18 3.40 3.06a. Construct an ANOVA table in Excel. (8 points)b. Is it plausible that the enthalpy is the same at all concentrations? Explain. (4 points)No,brause thevalue is very lowc. Use the Fisher LSD method to find a 95% confidence interval for the difference between themeans for concentrations 5 and 30. Show your work. (12 points)d. Compute the quantity s = √MSE, the estimate of the standard deviation σ. (2 points)

### a. Construct an ANOVA table in Excel: **Explanation:** - ANOVA (Analysis of Variance) is a…

Answered: 2. Measurements were taken for entropy…

Algebra: Structure And Method, Book 1

(REV)00th Edition

ISBN:9780395977224

Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole

Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole

Chapter12: Quadratic Functions

Section12.6: Solving Problems Involving Quadratic Equations

Problem 1.3E

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Radon is a gas emitted from the ground that can collect in houses in buildings. At certain levels it can cause lung cancer. Radon concentrations are measured in picocuries per liter (pCi/L). A radon level of 4 pCi/L is considered “acceptable” Radon levels in a house vary from week to week. In one house, a sample of 6 weeks had the following readings for radon level (in pCi/L): 1.9 2.8 3.9 3.9 4.2 5.7 Find the variance and standard deviation (definitional formula). Show your work using a table.
2.5. A sample of 15 g carbonated salt with density of 2650 kg/m3 is poured into a liter of water to form a suspension. The prepared suspensionwas used to fill up an Andreasen Pipette vessel to the 20 cm mark. Suspension samplesweretaken at:2,8, 16,32, 60,120, 180, 240, 360, 480, 600, and 1440 min. The weight concentrations on10 mL of the every extracted samplewere:0.1465,0.0967,0.0883, 0.0632, 0.0386,0.0294, 0.0178,0.0104, 0.0073,0.0051,0.0030, and 0.0008 g. If every extracted sample drops the height level inthe vessel 0.5 cm, evaluate the median size of the carbonated salt particles.
The shelf life of a particular dairy product is normally distributed with a μ of 12 days and a σ of 3 days. What percent of the products last 15 or more days?
18.2 Well water having a total hardness of 300 mg / L as CaCO , is softened by split treatment . A zeolite bed takes 3/4 of the total flow and produces water at a hardness of 3 mg / L . as CaCO , One - fourth of flow is directly mixed with the softened water . The zeolite bed has 28.3 m² resin capacity . The water softening capacity of the resin is 62 kg / m³ total hardness as CaCO ,. Exhausted resin is regenerated by 98 percent pure NaCl solution . The salt consumption is three times the theoretical amount and used as 4 percent salt solution . Calculate ( a ) regeneration period if 950 m³ per day of water is passed through the softener , ( b ) the hardness of the fin ishod water , and ( c ) salt consumption per regeneration cycle
1. As heat is added to a material its temperature rises. The heat capacity is a quantitative statement of the increase in temperature for a specified addition of heat. These data are obtained in X, the measured heat capacity of liquid ethylene glycol at constant pressure and 80° C. Measurements are in calories per gram degree Celsius: .645 .654 .640 .627 .626 .649 .629 .631 .643 .633 .646 .630 .634 .631 .651 .659 .638 .645 .655 .624 .658 .658 .658 .647 .665 Assume that X is normally distributed. Find a 95% confidence interval for µ.
A child with terrible taste in candy likes to mix his MnMs and Skittles into the same bag. His bag of mixed candy contains: 8 blue MnMs 14 red MnMs 5 yellow MNMS 2 blue Skittles 7 red Skittles 13 yellow Skittles 9 green Skittles Match each of the below outcomes with its probability. Assume the child is randomly selecting candies, and start each calculation with a "fresh" bag as described above. What is the probability that the child will select:
(c) Assume that the resist ance of a cert ain type of resistors is normally distributed with a mean of 250 ohms and a st and ard deviat ion of 15 ohms. What percent age of the resistors of this type will have a resistance above 270 ohms?
The following data are given for a biogas digester suitable for the output of six cows. The volume of digester is 8.8 m³, the volume of gas holder is 3 m³ and the retention time is 23 days. Find the height of gas holder height of gas holder =. cm
The following are the cystatin C levels (mg/L) for the patients described in Exercise 15 (A-17).Cystatin C is a cationic basic protein that was investigated for its relationship to GFR levels. In addition, creatinine levels are also given. (Note: Some subjects were measured more thanonce.) Cystatin C (mg/L) Creatinine (mmol/L) 1.78 4.69 0.35 0.14 2.16 3.78 0.30 0.11 1.82 2.24 0.20 0.09 1.86 4.93 0.17 0.12 1.75 2.71 0.15 0.07 1.83 1.76 0.13 0.12 2.49 2.62 0.14 0.11 1.69 2.61 0.12 0.07 1.85 3.65 0.24 0.10 1.76 2.36 0.16 0.13 1.25 3.25 0.17 0.09 1.50 2.01 0.11 0.12 2.06 2.51 0.12 0.06 2.34Source: D. M. Z. Krieser, M.D. Used with permission.(a) For each variable, compute the mean, median, variance, standard deviation, and coefficient ofvariation.(b) For each variable, construct a stem-and-leaf display and a box-and-whisker plot.(c) Which set of measurements is more variable, cystatin C or creatinine? On what do you baseyour answer? that question from…
10. 18.30 Temperatures are measured at various points on a heated plate (Table P18.30). Estimate the temperature at (a) x = 4, y = 3.2, and (b) x = 4.3, y = 2.7. TABLE P18.30 Temperature (°C) at various points on a square heated plate. x = 0 x = 2 y = 0 y 2 y = 4 y=6 y 8 100.00 85.00 70.00 55.00 40.00 90.00 64.49 48.90 38.78 35.00 x = 6 70.00 48.15 35.03 30.39 27.07 30.00 25.00 x = 4 80.00 53.50 38.43 x = 8 60.00 50.00 40.00 30.00 20.00
The following data refers to yield of tomatoes (kg/plot) for four different levels of salinity. Salinity level here refers to electrical conductivity (EC), where the chosen levels were EC = 1.6, 3.8, 6.0, and 10.2 nmhos/cm. (Use i = 1, 2, 3, and 4 respectively.) 1.6: 59.8 53.5 56.1 63.6 58.2 3.8: 55.3 59.3 52.8 54.5 6.0: 51.4 48.2 53.9 48.6 10.2: 44.7 48.8 40.8 47.2 46.1 n USE SALT Apply the modified Tukey's method to identify significant differences among u's. (Round your answers to two decimal places.) W12 W13 = W14 = W23 = W24 = W34 = Which pairs are significantly different? (Select all that apply.) O the 1.6 group and the 3.8 group O the 1.6 group and the 6.0 group O the 1.6 group and the 10.2 group O the 3.8 group and the 6.0 group O the 3.8 group and the 10.2 group O the 6.0 group and the 10.2 group O There are no significant differences.
The following data refers to yield of tomatoes (kg/plot) for four different levels of salinity. Salinity level here refers to electrical conductivity (EC), where the chosen levels were EC = 1.6, 3.8, 6.0, and 10.2 nmhos/cm. (Use i = 1, 2, 3, and 4 respectively.) 1.6: 59.1 53.1 56.9 63.8 58.1 3.8: 55.6 59.1 52.8 54.1 6.0: 51.6 48.6 53.5 49.2 10.2: 44.7 48.9 40.9 47.5 46.5 Calculate the test statistic. (Round your answer to two decimal places.)

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