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44. A regression analysis yields the line ý = 32 + 0.4x. One of the subjects, Racheal, has x = 60 and y = 52. (a) Calculate Racheal's predicted value, ĝ. (b) Calculate Racheal's residual.

44. A regression analysis yields the line ý = 32 + 0.4x. One of the subjects, Racheal, has x = 60 and y = 52. (a) Calculate Racheal's predicted value, ĝ. (b) Calculate Racheal's residual.

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
Section10.3: Measures Of Spread
Problem 1GP
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42. Independent random samples are selected from two populations. Below are selected summary statistics. Рop. Mean Stand. Dev. Sample size 1 62.00 10.00 17 54.00 6.00 10 (a) Construct the 95% confidence interval for µx - HY. (b) Obtain the P-value for the alternative µx # µy. Show your work. You will re- ceive no credit for simply reporting your answer. 43. Independent random samples are selected from two populations. Below are selected summary statistics. Pop. Mean Stand. Dev. Sample size 1 73.00 10.00 14 2 62.50 6.00 8 (a) Construct the 95% confidence interval for Hx – Hy. (b) Obtain the P-value for the alternative µx + µY. 44. A regression analysis yields the line ŷ = 32 + 0.4x. One of the subjects, Racheal, has x = 60 and y = 52. (a) Calculate Racheal's predicted value, ŷ. (b) Calculate Racheal's residual. 45. A regression analysis yields the line ŷ = 18 + 0.25x. One of the subjects, Mary, has x = 40 and y 32. (a) Calculate Mary's predicted value, ĝŷ. (b) Calculate Mary's residual.
Transcribed Image Text:42. Independent random samples are selected from two populations. Below are selected summary statistics. Рop. Mean Stand. Dev. Sample size 1 62.00 10.00 17 54.00 6.00 10 (a) Construct the 95% confidence interval for µx - HY. (b) Obtain the P-value for the alternative µx # µy. Show your work. You will re- ceive no credit for simply reporting your answer. 43. Independent random samples are selected from two populations. Below are selected summary statistics. Pop. Mean Stand. Dev. Sample size 1 73.00 10.00 14 2 62.50 6.00 8 (a) Construct the 95% confidence interval for Hx – Hy. (b) Obtain the P-value for the alternative µx + µY. 44. A regression analysis yields the line ŷ = 32 + 0.4x. One of the subjects, Racheal, has x = 60 and y = 52. (a) Calculate Racheal's predicted value, ŷ. (b) Calculate Racheal's residual. 45. A regression analysis yields the line ŷ = 18 + 0.25x. One of the subjects, Mary, has x = 40 and y 32. (a) Calculate Mary's predicted value, ĝŷ. (b) Calculate Mary's residual.
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