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11-7. An article in the Tappi Journal (March 1986) presented data on green liquor Na₂S concentration (in grams per liter) 1 paper machine production (in tons per day). The data (read from a graph) follow: and y X y X 11246 42 40 49 825 830 890 895 46 43 915 960 44 890 990 TOMMY 53 52 54 57 58 990 1010 1012 1030 1050 48 910 (a) Fit a simple linear regression model with y = green liquor Na,S concentration and x = production. Find an estimate of o². Draw a scatter diagram of the data and the resulting least squares fitted model. (b) Find the fitted value of y corresponding to x =915 and the associated residual. (c) Find the mean green liquor Na,S concentration when the production rate is 960 tons per day.

11-7. An article in the Tappi Journal (March 1986) presented data on green liquor Na₂S concentration (in grams per liter) 1 paper machine production (in tons per day). The data (read from a graph) follow: and y X y X 11246 42 40 49 825 830 890 895 46 43 915 960 44 890 990 TOMMY 53 52 54 57 58 990 1010 1012 1030 1050 48 910 (a) Fit a simple linear regression model with y = green liquor Na,S concentration and x = production. Find an estimate of o². Draw a scatter diagram of the data and the resulting least squares fitted model. (b) Find the fitted value of y corresponding to x =915 and the associated residual. (c) Find the mean green liquor Na,S concentration when the production rate is 960 tons per day.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 32PPS
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11-7. An article in the Tappi Journal (March 1986) presented data on green liquor Na₂S concentration (in grams per liter) and paper machine production (in tons per day). The data (read from a graph) follow: y 40 825 x y X 42 830 00.5 49 890 112, 46 [155] 895 LIA 46 43 915 960 990 53 52 44 890 48 910 54 57 58 1010 1012 1030 1050 (a) Fit a simple linear regression model with y = green liquor Na,S concentration and x = production. Find an estimate of o². Draw a scatter diagram of the data and the resulting least squares fitted model. (b) Find the fitted value of y corresponding to x = 915 and the associated residual. (c) Find the mean green liquor Na,S concentration when the production rate is 960 tons per day.
Transcribed Image Text:11-7. An article in the Tappi Journal (March 1986) presented data on green liquor Na₂S concentration (in grams per liter) and paper machine production (in tons per day). The data (read from a graph) follow: y 40 825 x y X 42 830 00.5 49 890 112, 46 [155] 895 LIA 46 43 915 960 990 53 52 44 890 48 910 54 57 58 1010 1012 1030 1050 (a) Fit a simple linear regression model with y = green liquor Na,S concentration and x = production. Find an estimate of o². Draw a scatter diagram of the data and the resulting least squares fitted model. (b) Find the fitted value of y corresponding to x = 915 and the associated residual. (c) Find the mean green liquor Na,S concentration when the production rate is 960 tons per day.
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