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Title: We record the amount of time (xin minutes) per day that a group of 12 high school students spend ... Post by: hellchicken on Feb 19, 2023 We record the amount of time (x in minutes) per day that a group of 12 high school students spend using their cell phone (texting, talking, and web use). We also record the overall GPA (y) of each student. Following is a regression summary for these data: The regression equation is GPA = 4.01 - 0.0153 CellTime Predictor Coef SE Coef T P Constant 4.0084 0.2486 6.12 0.000 CellTime -0.015334 0.003226 -4.75 0.001 S = 0.472864 R-Sq = 69.3% R-Sq(adj) = 66.3% Analysis of Variance Source DF SS MS F P Regression 1 5.0519 5.0519 22.59 0.001 Residual Error 10 2.2360 0.2236 Total 11 7.2879 What is a 95% confidence interval for the average GPA change associated with a 1-min increase in average daily cell use (β1)? ▸ (–0.0225,–0.0082) ▸ (3.4545, 4.5623) ▸ (–0.0212,–0.0095) ▸ (3.5578, 4.4590) Title: Re: We record the amount of time (xin minutes) per day that a group of 12 high school students spend ... Post by: sillysquirrel on Feb 19, 2023 Content hidden
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