Redo Exercise 14.61 when the dosage is 20 milligrams. Note the greatly increased width of the confidence limits for the expected number of deaths and of the limits of prediction. This example illustrates that extrapolation, estimating a value of Y for observations outside the range of the data, usually results in a highly inaccurate estimate.
Answer to relevant QuestionsThe following table shows the elongation (in thousandths of an inch) of steel rods of nominally the same composition and diameter when subjected to various tensile forces (in thousands of pounds). (a) Use appropriate ...With reference to Exercise 14.67, use the formula obtained in Exercise 14.31 to construct a 99% confidence interval for ρ. In exercise Formula With reference to the r × c table on page 371, use the method suggested in Exercise 14.73 to test at the 0.05 level of significance whether there is a relationship between I.Q. and on- the- job performance. Replace the row ...Given the joint density Show that the random variables X and Y are uncorrelated but not independent. Prove the result given on page 444 for the analysis of the Latin-square experiment.
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