Sentence examples for unknown standard from inspiring English sources

For example, suppose a researcher wishes to test the hypothesis that a sample of size n = 25 with mean x = 79 and standard deviation s = 10 was drawn at random from a population with mean μ = 75 and unknown standard deviation.

Consider structural elements with random strength that after a suitable transformation has normal distribution with unknown mean μ and known or unknown standard deviation σ.

Three non-linear biomass equations for Quercus spp. [52] with unknown standard errors of the regression coefficients were also included (no. 5 7).

ε[ t] is assumed to be a Gaussian noise with mean zero and unknown standard deviation σ.

An interesting side effect of thinking that GO (et al). is not the ideal target is that the "best GBA method" (by some currently unknown standard) might actually perform badly on GO.

R i is an additional unstructured random effect for the ith ward; we assume the R i 's arise from a common, normal 'population' distribution with mean zero and unknown standard deviation σ R : R i ∼ N (0, σ R 2 ), i = 1,..., K = 32.

Compounds common to all or most AG seed samples were compared to the Wiley 7th Edition/NIST 05 mass spectral database, and identifications were confirmed by coinjection with authentic standards on both nonpolar and polar columns and by identity of unknown and standard mass spectra.

Different methods of dealing with two or more imperfect tests and unknown reference standard are contrasted with regard to their implications on prevalence estimation: discrepant analysis, composite reference standards, and latent class models.

Note that when the system order is unknown, different standard techniques, available in the literature [2], can be employed to estimate the order.

In the following, we will base the statistical analysis strategy on the true (but unknown) population standard deviation of the paired differences.

We are interested in testing that the true (but unknown) population standard deviation of the paired differences is smaller than a benchmark below which agreement would be assessed to be acceptable from a clinical point of view.