We repeat the data and specify an alternative hypothesis for a correlation t-test. For each exercise, decide,
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We repeat the data and specify an alternative hypothesis for a correlation t-test. For each exercise, decide, at the 10% significance level, whether the data provide sufficient evidence to reject the null hypothesis in favor of the alternative hypothesis.
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r 1-² n-2 -0.721 1-(-0.721)² 2 :-1.47
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