An alcohol distillation column historically produces yields that are normally distributed and are known to have...
An alcohol distillation column historically produces yields that
are normally distributed and are known to have a standard deviation
of 3.05 volume percent.
Find the minimum sample size required to estimate the true
mean yield to within ± 1.75 volume percent using a 99% confidence
interval.
| zα | 1.282 | 1.645 | 1.960 | 2.326 | 2.576 | 3.090 |
|---|---|---|---|---|---|---|
| α(tail area) | 0.1 | 0.05 | 0.025 | 0.01 | 0.005 | 0.001 |
| %ile | 90 | 95 | 97.5 | 99 | 99.5 | 99.9 |
| Sample size is = |
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An alcohol distillation column historically produces yields that
are normally distributed and are known to have...
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The rejection region is:
Find the minimum value of c that yields a test
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0.025
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0.005
0.001
%ile...
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