Harry Potter In an attempt to measure the reading level of a book, the Flesch Reading Ease
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Harry Potter In an attempt to measure the reading level of a book, the Flesch Reading Ease ratings are obtained for 12 randomly selected pages from Harry Potter and the Sorcerer’s Stone by J. K. Rowling. Those values, included in Data Set 14 from Appendix B, are listed below. Given that these ratings are based on 12 randomly selected pages, is the standard deviation of this sample likely to be a reasonable estimate of the standard deviation of the reading levels for all pages in the whole book?
85.3 84.3 79.5 82.5 80.2 84.6 79.2 70.9 78.6 86.2 74.0 83.7
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