A company is producing and marketing new reading activities for elementary school children that it believes will

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A company is producing and marketing new reading activities for elementary school children that it believes will improve reading comprehension scores. A researcher randomly assigns third graders to an eight-week program in which some will use these activities and others will experience traditional teaching methods. At the end of the experiment, both groups take a reading comprehension exam. Their scores are shown in the back-to-back stem and-leaf display. Do these results suggest that the new activities are better? Test an appropriate hypothesis and state your conclusion.

A company is producing and marketing new reading activities for
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Business Statistics

ISBN: 9780321925831

3rd Edition

Authors: Norean Sharpe, Richard Veaux, Paul Velleman

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