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You are running a left-tailed 2-sample z-test at the 0.05 level of significance and you find a test statistic of z=-1.87. Shoudl you reject or

You are running a left-tailed 2-sample z-test at the 0.05 level of significance and you find a test statistic of z=-1.87. Shoudl you reject or not reject the null?

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