We Record the Amount of Time (X in Minutes) Per

question 13

Multiple Choice

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: ​

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What is a 95% confidence interval for the average GPA change associated with a 1-min increase in average daily cell use (β1) ?

• A) (-0.0225, -0.0082)
• B) (3.4545, 4.5623)
• C) (-0.0212, -0.0095)
• D) (3.5578, 4.4590)

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