Nicole and Elena wanted to know if listening to music at a louder volume negatively impacts test performance. To investigate, they recruited 30 volunteers and randomly assigned 10 volunteers to listen to music at 30 decibels, 10 volunteers to listen to music at 60 decibels, and 10 volunteers to listen to music at 90 decibels. While listening to the music, each student took a 10-question math test. Given is computer output from a least-squares regression analysis using x = volume and y = number correct.

Predictor	Coef	SE Coef	T	P
Constant	9.9000	0.7525	13.156	0.0000
Volume	-0.0483	0.0116	-4.163	0.0003

S=1.55781

R-Sq=38.2%

R-Sq(adj)=36.0%

What is the P-value of this test?