Consider the following data on 20 chemical reactions, with Y= chromatographic retention time (seconds) and X=...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
Consider the following data on 20 chemical reactions, with Y= chromatographic retention time (seconds) and X= molecular weight (gm/mole). Retention Time and Molecular Weight (n = 20) Retention Molecular Weight 136.24 Name Time alpha-pinene cyclopentene p-diethyl benzene decane 234.50 95.27 68.12 284.00 250.60 134.22 142.29 toluene 174.00 92.14 benzene 135.70 78.11 2-methyl pentane 2,3 dimethylbutane 1,7-octadiene 1,2,4-trimethyl benzene 2,3,4-trimethyl pentane ethylcyclohexane limonene 97.24 86.18 199.70 86.18 172.20 262.70 110.20 128.19 168.98 114.23 195.07 112.22 271.50 136.24 methyl cyclohexane m-diethyl benzene 2,3-dimethyl pentane 2,2-dimethyl butane pentane isooctane 153.57 98.19 281.50 131.83 134.22 100.20 89.34 86.18 78.00 72.15 136.90 114.23 86.18 hexane 106.00 Click here for the Excel Data File (a) Write the fitted regression equation. (Round your answers to 4 decimal places. A negative value should be Indicated by a mlnus sign.) (b) Calculate R. (Round your answer to 4 decimal places.) (c) Choose the right option. The regression line does show a strong positive linear relationship between molecular weight and retention time, indicating that the greater the molecular weight the greater is the retention time. O The regression line shows a strong negative relationship between the two variables, indicating the greater the molecular weight the lesser is the retention time. Retention Time and Molecular Weight Selected Chemicals (n = 20) Molecular Wt Name alpha-pinene cyclopentene p-diethyl benzene decane toluene Retention Time 234.50 136.24 LearningStats 95.27 68. 12 Copyright © 2019 by The McGraw-Hill Companies 284.00 134.22 250.60 142.29 174.00 92.14 This spreadsheet is intended solely for educational purposes by licensed users of Connect benzene 135.70 78.11 2-methyl pentane 2,3 dimethylbutane 1,7-octadiene 1,2,4-trimethyl benzene 2,3,4-trimethyl pentane ethylcyclohexane limonene methyl cyclohexane m-diethyl benzene 2,3-dimethyl pentane 2,2-dimethyl butane pentane isooctane 97.24 86.18 100.70 86.18 172.20 110.20 262.70 120.19 160.98 114.23 195.07 112.22 Source: Data are courtesy of John Seeley of Oakland University. Retention Time is chromatographic retention time (in seconds) and Molecular Wt is in gm / mole. 271.50 136.24 153.57 98.19 281.50 134.22 131.83 100.20 89.34 86.18 78.00 72.15 136.90 114.23 hexane 106.00 86.18 Consider the following data on 20 chemical reactions, with Y= chromatographic retention time (seconds) and X= molecular weight (gm/mole). Retention Time and Molecular Weight (n = 20) Retention Molecular Weight 136.24 Name Time alpha-pinene cyclopentene p-diethyl benzene decane 234.50 95.27 68.12 284.00 250.60 134.22 142.29 toluene 174.00 92.14 benzene 135.70 78.11 2-methyl pentane 2,3 dimethylbutane 1,7-octadiene 1,2,4-trimethyl benzene 2,3,4-trimethyl pentane ethylcyclohexane limonene 97.24 86.18 199.70 86.18 172.20 262.70 110.20 128.19 168.98 114.23 195.07 112.22 271.50 136.24 methyl cyclohexane m-diethyl benzene 2,3-dimethyl pentane 2,2-dimethyl butane pentane isooctane 153.57 98.19 281.50 131.83 134.22 100.20 89.34 86.18 78.00 72.15 136.90 114.23 86.18 hexane 106.00 Click here for the Excel Data File (a) Write the fitted regression equation. (Round your answers to 4 decimal places. A negative value should be Indicated by a mlnus sign.) (b) Calculate R. (Round your answer to 4 decimal places.) (c) Choose the right option. The regression line does show a strong positive linear relationship between molecular weight and retention time, indicating that the greater the molecular weight the greater is the retention time. O The regression line shows a strong negative relationship between the two variables, indicating the greater the molecular weight the lesser is the retention time. Retention Time and Molecular Weight Selected Chemicals (n = 20) Molecular Wt Name alpha-pinene cyclopentene p-diethyl benzene decane toluene Retention Time 234.50 136.24 LearningStats 95.27 68. 12 Copyright © 2019 by The McGraw-Hill Companies 284.00 134.22 250.60 142.29 174.00 92.14 This spreadsheet is intended solely for educational purposes by licensed users of Connect benzene 135.70 78.11 2-methyl pentane 2,3 dimethylbutane 1,7-octadiene 1,2,4-trimethyl benzene 2,3,4-trimethyl pentane ethylcyclohexane limonene methyl cyclohexane m-diethyl benzene 2,3-dimethyl pentane 2,2-dimethyl butane pentane isooctane 97.24 86.18 100.70 86.18 172.20 110.20 262.70 120.19 160.98 114.23 195.07 112.22 Source: Data are courtesy of John Seeley of Oakland University. Retention Time is chromatographic retention time (in seconds) and Molecular Wt is in gm / mole. 271.50 136.24 153.57 98.19 281.50 134.22 131.83 100.20 89.34 86.18 78.00 72.15 136.90 114.23 hexane 106.00 86.18
Expert Answer:
Related Book For
Applied Statistics in Business and Economics
ISBN: 978-0073521480
4th edition
Authors: David Doane, Lori Seward
Posted Date:
Students also viewed these mathematics questions
-
The weight W. Consider the following data on 20 plants. Find the following for the given measurement. a. The sample mean. b. The sample median. c. The trimmed means tr(5), tr(10), and tr(20). Plant...
-
The height H. Consider the following data on 20 plants. Find the following for the given measurement. a. The sample mean. b. The sample median. c. The trimmed means tr(5), tr(10), and tr(20). Plant...
-
The yield Y. Consider the following data on 20 plants. Find the following for the given measurement. a. The sample mean. b. The sample median. c. The trimmed means tr(5), tr(10), and tr(20). Plant...
-
Answer the following questions: 1. What values are inherent in the helping process? 2. Why does Egan refer to them as tools of the trade?
-
Indicate the possible cost and benefit to the United States from the movement to a single unified market by the European Union at the beginning of 1993.
-
The anabolic steroid methandrostenolone is shown here. (a) How does it differ structurally from testosterone? (b) Why might such drugs be administered to burn victims? H3C H3C H3C
-
A statistics teacher claims that, on the average, 20% of her students get a grade of A, 35% get a B, 25% get a C, 10% get a D, and 10% get an F. The grades of a random sample of 100 students were...
-
Assume the same facts as for Question 1 above. The fair value of the investment in Company E is $220,000 on December 31, 2011. Answer the following questions assuming the investment is recorded using...
-
1 . Firms institute a variety of brand - related strategies to create and manage key brand assets that includes like brand extension and line extension, manufacturer brands and private - label...
-
A mass-transfer process is used to remove ammonia (NH 3 , solute A) from a mixture of NH 3 and air, using water as the absorption solvent. At the present conditions of operation, the partial pressure...
-
The current price for CVC futures is: $5,682.00 You have the following position: short 1 contract The contract size for futures is: 50 The initial margin per contract is: $5,000 The maintenance...
-
A coaxial capacitor consisting of an inner wire and an outer cylindrical shell has a length of \(50 \mathrm{~cm}\) and an outer diameter of \(4 \mathrm{~mm}\). When connected to a \(16.0-\mathrm{V}\)...
-
Suppose that the metal electrodes in a battery are shaped like large parallel plates and are \(2.00 \mathrm{~mm}\) apart so that they are essentially a parallel-plate capacitor. If the battery...
-
When a parallel-plate capacitor has air between its plates and is connected to a \(12.0-\mathrm{V}\) battery, its capacitance is \(33 \mathrm{nF}\). The capacitor is then submerged in distilled...
-
Why are capacitors used in external defibrillators instead of high-voltage batteries?
-
A solid conducting sphere of radius \(R=10 \mathrm{~cm}\) is embedded in an electrically neutral nonconducting spherical shell that has inner radius \(R\), outer radius \(2 R\), and is made of a...
-
Lewis writes an editorial in a newspaper claiming that Sinclair, the President of a well known Tech company is a recovering alcoholic. Sinclair sues Lewis and the newspaper for defamation. Af trial...
-
The relationship described in question 7 does not always appear to hold. What factors, besides the number of firms in the market, might affect margins?
-
A study showed that 36 of 72 cell phone users with a headset missed their exit, compared with 12 of 72 talking to a passenger. Construct a 95 percent confidence interval for the difference in...
-
(a) Use Excel to make a scatter plot of the following exam score data, placing Midterm on the X-axis and Final on the Y-axis. Add titles and modify the default colors, fonts, etc., as you judge...
-
(a) Use Excel to prepare an appropriate type of chart (bar, line, pie, scatter) to display the following data. Modify the default colors, fonts, etc., as you judge appropriate to make the display...
-
Crank \(C B\) rotates about the horizontal axis with an angular velocity \(\omega_{1}=6 \mathrm{rad} / \mathrm{s}\) which is constant for a short interval of motion which includes the position shown....
-
Determine the angular acceleration \(\dot{\omega}_{2}\) of crank \(A D\) in Sample Problem 7/3 for the conditions cited. Also find the angular acceleration \(\dot{\omega}_{n}\) of link \(A B\)....
-
The electric motor with an attached disk is running at a constant low speed of \(120 \mathrm{rev} / \mathrm{min}\) in the direction shown. Its housing and mounting base are initially at rest. The...
Study smarter with the SolutionInn App