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

Multiple Choice

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: ​

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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)