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

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      <subfield code="a">The Distribution of student's t-statistic for small samples from lognormal exposure distributions</subfield>
      <subfield code="c">John S. Evans and Neil C. Hawkins</subfield>
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      <subfield code="a">In 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</subfield>
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      <subfield code="a">Hawkins, Neil C.</subfield>
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      <subfield code="a">American Industrial Hygiene Association journal</subfield>
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      <subfield code="t">American Industrial Hygiene Association journal</subfield>
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      <subfield code="g">Vol. 49, nº 10, October 1988 ; p. 512-515</subfield>
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