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In a survey, 15 people were asked how much they spent on their childs last birthday gift. The results were roughly bell-shap
Question 18 There was a research article that reported a correlation of +0.7 between GPA and IQ. It also reports a correlatio
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mais ł = 39 6 gol. leuel of confidence so Margin of error = & 212,7 un tos, lui = 2.73). 2) aktwn a) both are same story nega

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