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THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
Let X1,X2,X3,and X4 be a random sample of observations from a population with mean μ and variance σ2.Consider the following two point estimators of μ:
1 = 0.10 X1 + 0.20 X2 + 0.40 X3 + 0.30 X4,and
2 = 0.25 X1 + 0.25 X2 + 0.30 X3 + 0.20 X4
-Which estimator is more efficient,( 1)or (
2)? Explain in detail.
Peripheral Vision
The portion of vision that occurs outside the direct line of sight, enabling humans to detect movement and objects around them without directly looking at them.
Rods
In the eye, rod-shaped receptors of light that are sensitive to intensity only. Rods permit black-and-white vision.
Newborns
Refers to infants from birth to about 2 months of age, characterized by rapid physical and neurological development.
Depth Perception
The ability to perceive the distance of an object and the spatial relationship between objects in the environment.
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