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:

What is a 90% confidence interval for β0, the mean GPA of high school students who spent no time using their cell phone?
A) (-0.0225, -0.0082)
B) (3.4545, 4.5623)
C) (-0.0212, -0.0095)
D) (3.5578, 4.4590)

Question

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:

What is a 90% confidence interval for β0, the mean GPA of high school students who spent no time using their cell phone?

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What is a 90% confidence interval for β0, the mean GPA of high school students who spent no time using their cell phone?
A) (-0.0225, -0.0082) 
B) (3.4545, 4.5623) 
C) (-0.0212, -0.0095) 
D) (3.5578, 4.4590)

Quizplus · Accepted Answer

The Answer of 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: ​

​
What is a 90% confidence interval for β0, the mean GPA of high school students who spent no time using their cell phone?
A) (-0.0225, -0.0082) 
B) (3.4545, 4.5623) 
C) (-0.0212, -0.0095) 
D) (3.5578, 4.4590)

We Record the Amount of Time (Xin Minutes) Per Day