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 = 28) Retention Name Time Molecular Weight alpha-pinene cyclopentene p-diethyl benzene 234.50 136.24 95.27 68.12 284.00 134.22 decane 258.60 142.29 toluene 174.00 92.14 benzene 135.70 78.11 2-methyl pentane 2,3 dimethylbutane 1,7-octadiene 97.24 86.18 100.70 86.18 172.20 110.20 1,2,4-trimethyl benzene 2,3,4-trimethyl pentane ethylcyclohexane 262.70 120.19 160.98 114.23 195.07 112.22 limonene 271.50 136.24 methyl cyclohexane m-diethyl benzene 2,3-dimethyl pentane 153.57 98.19 281.se 134.22 131.83 100.20 2,2-dimethyl butane pentane 89.34 86.18 78.00 72.15 isooctane 136.90 114.23 hexane 106.00 86.18 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 minus slgn.) (b) Calculate R. (Round your answer to 4 decimal places.) (c) Choose the right option. O The regression line does show a strong positive linear relationship between molecular welght and retentlon time, Indicating that the greater the molecular weight the greater Is the retentlon time. O The regresslon line shows a strong negatlve relationship between the two varlables, Indicating the greater the molecular welght the lesser Is the retention time. Retention Time and Molecular Weight Selected Chemicals (n = 20) Name alpha-pinene cyclopentene p-diethyl benzene decane toluene benzene 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 Retention Time Molecular Wt 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 135.70 78.11 97.24 86.18 100.70 86.18 172.20 110.20 262.70 120.19 160.98 114.23 112.22 136.24 195.07 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. 271.50 153.57 98.19 281.50 134.22 131.83 100.20 89.34 86.18 78.00 72.15 isooctane 136.90 114.23 hexane 106.00 86.18