Thane Company is interested in establishing the relationship between electricity costs and machine hours. Data have been collected and a regression analysis prepared using Excel. The monthly data and the regression output follow:

Month	Machine Hours	Electricity Costs
January	2,800	$	18,550
February	3,200	$	21,300
March	2,200	$	13,650
April	3,400	$	23,300
May	4,100	$	28,400
June	3,600	$	22,300
July	4,400	$	24,900
August	3,800	$	22,900
September	2,300	$	15,800
October	4,000	$	26,300
November	5,100	$	31,300
December	4,500	$	27,900

Summary Output
Regression Statistics
Multiple R	0.964
R Square	0.930
Adjusted R2	0.922
Standard Error	1,451.70
Observations	12.00

	Coefficients	Standard Error	t Stat	P-value	Lower 95%	Upper 95%
Intercept	2,530.90	1,835.03	1.38	0.20	(1,557.80)	6,619.59
Machine Hours	5.67	0.49	11.49	0.00	4.57	6.77

The correlation coefficient for the regression equation for electricity costs is: