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THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
Given a population with mean μ=120 and variance σ2 = 81,the central limit applies when the sample size is large-enough.A random sample of size n = 36 is obtained.
-What is the probability that the sample mean is at most 121.5?
Lens
A piece of transparent material, usually made of glass or plastic, which refracts or focuses light rays, often used in glasses, cameras, and microscopes.
Amplitude
In the context of waves, it is the height of the wave from its resting position, indicating the wave's strength or intensity.
Brightness
This is perceived as the intensity or luminosity of light emitted or reflected by an object.
Optic Disc
A small, circular area in the retina where the optic nerve connects to the eye, marking the point of exit for retinal nerve fibers.
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