Improved Estimators of the Mean of a Normal Distribution with a Known Coefficient of Variation

Table 2

MSEs of the proposed estimators 𝑇^∗₁, 𝑇₂, and 𝑇₃ when 𝑛=20.

𝜃	𝑎	MSE(𝑇^∗1)	MSE(𝑇2)	MSE(𝑇3)
	0.01	2.061𝑒−5	2.601𝑒−5	5.362𝑒−4
5	0.09	1.068𝑒−4	5.353𝑒−5	5.362𝑒−4
	0.25	1.303𝑒−2	8.556𝑒−3	1.439𝑒−2
	0.01	2.366𝑒−5	2.315𝑒−5	1.785𝑒−3
10	0.09	1.573𝑒−2	1.342𝑒−2	2.003𝑒−2
	0.25	2.511𝑒−1	1.921𝑒−1	3.459𝑒−1
	0.01	1.358𝑒−5	1.286𝑒−5	2.748𝑒−4
15	0.09	8.374𝑒−2	7.339𝑒−2	1.849𝑒−1
	0.25	7.765𝑒−1	4.851𝑒−1	3.91847