Example 1 used measured performance IQ scores for three different blood lead levels. If we use the same three categories of blood lead levels with the full IQ scores, we get the accompanying Excel display. Using a 0.05 significance level, test the claim that the three categories of blood lead level have the same mean full IQ score. Does it appear that exposure to lead has an effect on full IQ scores? Use analysis of variance for the indicated test.
Answer to relevant QuestionsData Set 14 in Appendix B lists highway fuel consumption amounts (mi/gal) for cars categorized by size (small, midsize, large). If we use those highway fuel consumption amounts arranged into the three separate size ...Pages were randomly selected by the author from The Bear and the Dragon by Tom Clancy, Harry Potter and the Sorcerer’s Stone by J. K. Rowling, and War and Peace by Leo Tolstoy. The Flesch Reading Ease scores for those ...What is an interaction between two factors? In general, when using two way analysis of variance, if we find that there is an interaction effect, how does that affect the procedure? Data Set 14 in Appendix B includes highway fuel consumption amounts for cars with 4 cylinders, 6 cylinders, and 8 cylinders. Analysis of variance is used with the highway fuel consumption amounts (mi/gal) categorized ...Listed below are weights (kg) of eight male college students in September and April of their freshman year (from Data Set 4 in Appendix B). a. Test for a linear correlation between September weights and the subsequent April ...
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