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Unformatted text preview: say that we have the following situation.
We manufacture on a machine in our factory balls. We would like to estimate
the average diameter.
From previous measurements we know that the standard deviation is σ = 0.01
in. We adjusted the machine, and we would like to see what (average) diameter
the produced balls have.
Assumption: we assume that the distribution of the balls is normal (which is reasonable;
see later more about the Central Limit Theorem and the normal distribution).
Therefore, we assume that the diameter of balls is described by X ∼ N (µ, 0.012 ). We
want to determine µ.
Es. The statistics (estimator)
To ﬁnd a CI for...
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This note was uploaded on 02/05/2014 for the course MATH 3339 taught by Professor Staff during the Fall '08 term at University of Houston.
 Fall '08
 Staff
 Statistics

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