Mathematics, 28.05.2021 04:30 chrisraptorofficial
A study was conducted to see if students given extra oxygen prior to taking the SAT could improve their scores. It was found that 42 of 66 randomly selected students who received oxygen prior to taking the SAT improved their scores while 35 of 63 randomly selected students who were just given normal air improved their SAT scores. Which procedure should be used to see if there is evidence that students who breathed oxygen significantly improved SAT scores
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