1. In a chemical distillation process, a study is conducted to find a relationshipbetween the percentage of hydrocarbons that are present in the main condenserof the distillation unit and the percentage of the purity of oxygen produced. Thedata is shown as follows.Hydrocarbon (%)0.991.021.151.291.461.360.871.23Oxygen Purity (%)90.0189.0591.4393.7496.7394.4587.5991.77(a) Identify the independent and dependent variablesb) Test the linearity between x and y at 95% confidence interval usingit-testii) ANOVA

Answered: 1. In a chemical distillation process,…

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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2. Volcanologists have measured the hydrogen content (in % of total number of atoms) of samples of gases collected from the 1970 Moumt Etna volcanic eruptions. Values are given in the following table: 1970 Hydrogen content (%) 35.8 44.5 35.5 32.0 52.0 39.0 37.0 47.0 42.0 57.0 42.5 54.5 35.0 592.5 43.5 48.0 45.0 44.6 38.5 53.0 55.0 40.0 37.5 57.7 38.5 36.0 46.5 35.5 45.5 37.0 36.0 33.0 Enter the data in Excel. Now find out the following information. Median for 1970 Hydrogen content Mode for 1970 Hydrogen content SEM for 1970 Hydrogen content Standard deviation for 1970 Hydrogen content 99% Lower confidence limit 1970 Hydrogen content 99 Upper confidence limit 1970 Hydrogen content Do you things this sample of data give vou a normal distribution curve? and Why? الترکبر ENG )
In the book Business Research Methods (5th ed.). Donald R. Cooper and C. William Emory discuss studying the relationship between on-the-job accidents and smoking. Cooper and Emory describe the study as follows: Suppose a manager implementing a smoke-free workplace policy is interested in whether smoking affects worker accidents. Since the company has complete reports of on-the-job accidents, she draws a sample of names of workers who were involved in accidents during the last year. A similar sample from among workers who had no reported accidents in the last year is drawn. She interviews members of both groups to determine if they are smokers or not. The sample results are given in the following table. On-the-Job No 7 Smoker Heavy Moderate Nonsmoker 16 Column total 34 Heavy Moderate Yes Nonsmoker Total 12 6 Expected counts are below observed counts No Accident Total 19 7 9.21 9 Row 1 Row 2 Row 3 Column 1 Column 2 16 32 Accident 12 9.79 6 Accident Row Total 7.27 16 15.52 32 7.73 16…
C-4) The concentration of active ingredient in a liquid laundry detergent is thought to be affected by the type of catalyst used in the process. Ten observations on concentration are taken with each catalyst, and the data follow: Catalyst 1: 57.9, 66.2. 65.4, 65.4, 65.2. 62.6, 67.6, 63.7, 67.2. 71.0 Catalyst 2: 66.4. 71.7. 70.3. 69.3, 64.8, 69.6, 68.6, 69.4, 65.3, 68.8. Find a 95% confidence interval on the ratio of active concentrations for the two catalysts, and explain it.
For the following z scores, please tell me the percentage of scores that lie below it: a. 2.5 ___________ b. -1.45 ___________ c. -1 ____________
People living in a town are grouped according to their age into five groups. The number of persons lived during a calendar year and the number of deaths recorded during the same period are as follows: Age Group (in years) 0-10 10-30 30-50 50-70 70 and above No. of Persons 5,000 10,000 15,000 10,000 2,000 No. of Deaths 125 30 30 200 1,000 Calculate crude death rate of the town.
#46
Impure cans: A manufacturer of aluminum cans measured the level of impurities in 24 cans. The amounts of impurities, in percent, were as follows. 2.1 1.5 1.3 1.0 2.8 8.2 1.9 1.3 3.2 4.4 9.5 3.8 2.7 4.9 2.1 1.8 8.0 4.5 2.5 1.6 1.9 1.5 2.8 1.6 Construct a boxplot for this sample. Is it reasonable to treat the sample as coming from an approximately normal population? Explain.
1. The table given below shows the data obtained during outbreak of smallpox: Test the effectiveness of vaccination in preventing the attack from smallpox. Test your result with the help of at 5 percent level of significance. Table 1: The table given below shows the data obtained during outbreak of smallpox Attacked Not Attacked Task C Vaccinated 31 469 500 Not Vaccinated 185 1315 1500 Total 216 1784 2000
Blood pressure: A blood pressure measurement consists of two numbers: the systolic pressure, which is the maximum pressure taken when the heart is contracting, and the diastolic pressure, which is the minimum pressure taken at the beginning of the heartbeat. Blood pressures were measured, in millimeters of mercury, for a sample of 8 adults. The following table presents the results. Systolic Diastolic 134 87 115 83 113 77 123 77 119 69 118 88 130 76 116 70 1. What is the 90% confidence intervals of the parameters beta0 and beta1? 2. What is the mean prediction at an input value of 125? 3. What is the 90% confidence interval of the mean prediction at an input value of 125? 4. What is the 95% confidence interval of the overall prediction at an input value of 125? 5. Write the X and Y matrices?
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