Confidence interval for slope

Musa is interested in the relationship between hours spent studying and caffeine consumption among students at his school. He randomly selects

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students at his school and records their caffeine intake (mg) and the amount of time spent studying in a given week. Here is computer output from a least-squares regression analysis on his sample:

Predictor	Coef	SE Coef	T	P
Constant	$2.544$ ‍	$0.134$ ‍	$18.955$ ‍	$0.000$ ‍
Caffeine	$0.164$ ‍	$0.057$ ‍	$2.862$ ‍	$0.010$ ‍
$S = 1.532$ ‍	$R-sq = 60.0 %$ ‍

Assume that all conditions for inference have been met.

Which of these is a $95 %$ ‍ confidence interval for the slope of the least squares regression line?

AP®︎/College Statistics

Course: AP®︎/College Statistics > Unit 13

Problem