e test whether "cramming" for an exam is harmful to grades. Group one crams for a pretend exam, but group two does not. Each have a sample size (n1) of 31. Group one has a sample mean of 43 and a standard deviation of 8, and group two has a sample mean of 48 and a standard deviation of 9.14. Show the eight steps for hypothesis testing. Is there a significant difference between groups?

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