Author Question: We record the amount of time (xin minutes) per day that a group of 12 high school students spend ... (Read 78 times)

allihubbard · **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)

feiojef · **Reply #1 on:** Feb 26, 2023

A FREE account is required to view all solutions!

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.

Answer Preview

Only 39% of students answer this correctly