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Difference between Z-test and t-test: Z-test is used when sample size is large (n>50), or the population variance is known. t-test is used when sample size is small (n<50) and population variance is unknown. There is no universal constant at which the sample size is generally considered large enough to justify use of the plug-in test.
The Z Pulsed Power Facility, informally known as the Z machine or simply Z, [1] is the largest high frequency electromagnetic wave generator in the world, operated by Sandia National Laboratories in Albuquerque, New Mexico.
A load bank is a piece of electrical test equipment used to simulate an electrical load, to test an electric power source without connecting it to its normal operating load. [ 1 ] [ 2 ] During testing, adjustment, calibration, or verification procedures, a load bank is connected to the output of a power source, such as an electric generator ...
In fusion power research, the Z-pinch (zeta pinch) is a type of plasma confinement system that uses an electric current in the plasma to generate a magnetic field that compresses it (see pinch). These systems were originally referred to simply as pinch or Bennett pinch (after Willard Harrison Bennett ), but the introduction of the θ-pinch ...
E-values can be interpreted in a number of different ways: first, an e-value can be interpreted as rescaling of a test that is presented on a more appropriate scale that facilitates merging them. [2] Second, the reciprocal of an e-value is a p-value, but not just any p-value: a special p-value for which a rejection `at level p' retains a ...
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The Z-factor defines a characteristic parameter of the capability of hit identification for each given assay. The following categorization of HTS assay quality by the value of the Z-Factor is a modification of Table 1 shown in Zhang et al. (1999); [2] note that the Z-factor cannot exceed one.
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