Question

The data file Dow Jones shows percentage changes (xi) in the Dow Jones index over the first five trading days of each of 13 years and also the corresponding percentage changes (yi) in the index over the whole year. If the Dow Jones index increases by 1.0% in the first five trading days of a year, find 90% confidence intervals for the actual and also the expected percentage changes in the index over the whole year. Discuss the distinction between these intervals.


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  • CreatedJuly 07, 2015
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