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Author Question: We record the amount of time (xin minutes) per day that a group of 12 high school students spend ... (Read 37 times)

allihubbard

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on: Feb 26, 2023
We record the amount of time (xin 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 90% confidence interval forβ0, the mean GPA of high school students who spent no time using their cell phone?


◦

(–0.0225,–0.0082)


◦

(3.4545, 4.5623)


◦

(–0.0212,–0.0095)


◦

(3.5578, 4.4590)

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Marked as best answer by allihubbard on Feb 26, 2023

feiojef

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Reply #1 on: Feb 26, 2023
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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allihubbard

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Reply 2 on: Feb 26, 2023
Thanks for the timely response, appreciate it

yeungji

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Reply 3 on: Yesterday
Excellent

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