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The Distribution of student's t-statistic for small samples from lognormal exposure distributions

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1001 ‎$0‎MAPA20080097868‎$a‎Evans, John S.
24514‎$a‎The Distribution of student's t-statistic for small samples from lognormal exposure distributions‎$c‎John S. Evans and Neil C. Hawkins
520  ‎$a‎In industrial environments it is common for pollutant concentrations to be approximately lognormal. Unfortunately, when based on small samples from lognormal distributions, the ordinary student's t-statistic has some undesirable characteristics which are not recognized widely by practicing industrial hygienists. In this paper, the authors demonstrate the difficulties in using the ordinary student's t-statistic to evaluate the average exposure, explore the properties of alternative test statistics, and make some general observations on the implications of these findings
65011‎$0‎MAPA20080585679‎$a‎Higiene industrial
65011‎$0‎MAPA20080605278‎$a‎Contaminantes químicos
65011‎$0‎MAPA20080570484‎$a‎Riesgo laboral
65011‎$0‎MAPA20080539948‎$a‎Tests
65011‎$0‎MAPA20080551797‎$a‎Muestreos
65011‎$0‎MAPA20080601508‎$a‎Estudios estadísticos
65011‎$0‎MAPA20080592042‎$a‎Modelos matemáticos
7001 ‎$0‎MAPA20080165574‎$a‎Hawkins, Neil C.
7400 ‎$a‎American Industrial Hygiene Association journal
7730 ‎$t‎American Industrial Hygiene Association journal‎$d‎Akron, Ohio‎$g‎Vol. 49, nº 10, October 1988 ; p. 512-515