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Prediction Interval
We would like to construct a prediction interval around which would contain the actual Y.
If n ≥ 30, ± Zse would be the interval, where Z is the appropriate Standard Normal Value.
If n < 30, ± tse would be the interval, where t is the appropriate t value (with n - 2 degrees of freedom).
In the case of the pharmaceutical firm, at X = Rs.1 crore the 90% prediction interval is 22 ± 2.132 x 3.24.
rules for constructing the diagrames
You will recall the function pnorm() from lectures. Using this, or otherwise, Dteremine the probability of a standard Gaussian random variable exceeding 1.3. Using table(), or
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Examining the Population Variance Business decision making does not limit itself to setting up the hypothesis to test for the equality of more than two means or proportions sim
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Do people of different age groups differ in their response to e-mail messages? A survey by the Cent of the Digital Future of the University of Southern California reported that 70.
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