40. In a study of processes used to remove impuritiesfrom cellulose goods ("Optimization of Rope-Range Bleaching of Cellulosic Fabrics," TextileResearch J., 1976: 493-496), the following dataresulted from a 2 experiment involving the desiz-ing process. The four factors were enzymeconcentration (A), pH (B), temperature (C), andtime (D).Starch %by WeightEn-Treat- zymement (gL) pH (C)Temp. Time1st2nd(hr) Repl. Repl.(1)a.b.60.060.060.06.9.80 14.046.50.7550.7550.755075506.06.09.72 13.5010.13 11.277.060.070.0ab7.06.11.80 11.306.06.12.70 11.37ac6.070.06.11.96 12.056.11.38 9.9270.070.060.060.060.060.070.070.070.070.0be7.07.0abc.6.11.80 11.1013.15 13.0010.60 12.3710.37 12.0011.30 11.6413.05 14.5511.15 15.006.0.75adbdabd6.050.757.07.06.06.07.07.0cdacd50.75508.12.70 14.1013.20 16.12bcdabcd.75a Use Yates's algorithm to obtain sums of squaresand the ANOVA table.b. Do there appear to be any second-, third-, orfourth-order interaction effects present? Explainyour reasoning. Which main effects appear to besignificant?

An experimental design is a way to carefully plan experiments in advance so that the results…

Answered: 40. In a study of processes used to…

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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For each of the following processes, describe the expected behaviour of the autocorrelation function (ACF) and partial autocorrelation function (PACF) plots: (a) White noise; (b) MA(3); (c) AR(2); (d) ARMA(3,1).
How would I solve this assuming the population variances are equal?
#8
1. A study was performed to test three different feed additives on growth promotion. Weight gain of heifers by treatment (pounds per animal per day) was shown in the following table. Determine if there is significant difference among treatment means at 5% level. Replicate Treatment Total 1 2 4 5. 6. 7 Control (T1) 1.22 1.19 1.18 1.23 1.28 1.14 Feed-1 (T2) 1.34 1.41 1.38 1.32 1.36 1.43 1.37 Feed-2 (T3) 1.45 1.48 1.51 1.4 1.44 Feed-3 (T4) 1.31 1.33 1.28 1.34 1.41 1.27 1.38 a. Design: Claim: Но: На: b. level of significance: test-statistic: c. Decision Rule
2. A cohort study is conducted to assess the association between clinical characteristics and the risk of stroke. The study involves n = 1370 participants who are free of stroke at the study start. Each participant is assessed at study start (baseline) and every year thereafter for 5 years. The following data were collected relating hypertensive status measured at baseline to incident stroke over 5 years. Free of Stroke at 5 years Stroke Baseline: Not hypertensive 1000 50 Baseline: Hypertensive 300 50 Compute the cumulative incidence of stroke in patients classified as hypertensive at baseline.A)0.20B)0.50C)0.0625D)0.05
An experiment that was carried out to study how flow rate through a solenoid valve in an automobile's pollution-control system depended on three factors: armature lengths, spring load, and bobbin depth. Four different levels (low, moderate, high, and extreme) of each factor were chosen, and a single observation on flow was made for each combination of levels. The resulting data set consisted of how many observations? Show how you derived your answer.
9.1.2
1. The data in Table 7–6 were collected in a clinical trial to evaluate a new compound designed to improve wound healing in trauma patients. The new compound was com- pared against a placebo. After treatment for 5 days with the new compound or placebo, the extent of wound healing was measured. Is there a difference in the extent of wound healing between the treatments? (Hint: Are treatment and the percent wound healing independent?) Run the appropriate test at a 5% level of significance. Use the data in Problem 1. Pool the data across the treatments into one sample of size n = 250. Use the pooled data to test whether the distribution of the percent wound healing is approximately normal. Specifically, use the following distribution 30%, 40%, 20%, and 10% and a = 0.05 to run the appropriate test. Percent Wound Healing Treatment 0-25% 26-50% 51-75% 76-100% New compound (n=125) 15 37 32 41 Placebo (n=125) 36 45 34 10
The article "Oxidation State and Activities of Chromium Oxides in Cao-SiO,-CrO, Slag System" (Y. Xiao, L. Holappa, and M. Reuter, Metallurgical and Materials Transactions B, 2002:595-603) presents the amount x (in mole percent) and activity coefficient y of CrO,5 for several specimens. The data, extracted from a larger table, are presented in the following table. х У 2.6 10.20 5.03 19.9 8.84 0.8 6.62 5.3 2.89 20.3 2.31 39.4 7.13 5.8 3.40 29.4 5.57 2.2 7.23 5.5 2.12 33.1 1.67 44.2 5.33 13.1 16.70 0.6 9.75 2.2 2.74 16.9 2.58 35.5 1.50 48.0 Compute the least-squares line for predicting y from x. b. Plot the residuals versus the fitted values. Compute the least-squares line for predicting y from 1/x. d. Plot the residuals versus the fitted values. C. Using the better fitting line, find a 95% confidence interval for the mean value of y when x= 5.0.
Penicillin Yields. In Statistics for Experimenters (New York, NY: John Wiley &Sons, Inc., 1978),G. Box, W. Hunter, and J. Hunter describe an experiment to determine the effect on yield of four variants of a process for producing penicillin. A basic material in the production process, corn steep liquor, was known to be quite variable. Five blends of corn steep liquor were obtained, and each blend was divided into four equal parts. The four process variants were randomly assigned to the four parts in each blend. The penicillin yields are given in the following table.

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