Table 1.

Example 1. Confidence intervals and the corresponding coverage based on the empirical likelihood (EL) and normal approximation (Norm) methods

Sample size				CI(95%)		coverage
n	m	cx	cy	EL	Norm	EL	Norm
30	30	12.5	15	(−2.686, −1.311)	(−3.153, −0.847)	94.46	97.39
			20	(−2.682, −1.311)	(−3.354, −0.646)	94.13	98.60
		15	15	(−2.652, −1.313)	(−3.106, −0.894)	94.66	97.72
			20	(−2.688, −1.347)	(−3.399, −0.601)	95.28	98.15
50	50	12.5	15	(−2.531, −1.457)	(−2.753, −1.247)	95.02	97.84
			20	(−2.534, −1.46)	(−2.904, −1.096)	95.68	98.54
		15	15	(−2.522, −1.469)	(−2.751, −1.249)	95.07	97.53
			20	(−2.530, −1.477)	(−2.926, −1.074)	94.9	98.34
100	100	12.5	15	(−2.386, −1.619)	(−2.442, −1.558)	94.35	96.60
			20	(−2.379, −1.613)	(−2.519, −1.481)	93.78	97.64
		15	15	(−2.374, −1.625)	(−2.433, −1.567)	94.45	97.35
			20	(−2.369, −1.619)	(−2.498, −1.502)	94.98	97.69

CI(95%), approximate 95% confidence interval.