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(Solved): A Researcher Conducted A Single-sample Null Hypothesis Test With The Z-statistic. The Researcher Rep...

A researcher conducted a single-sample null hypothesis test with the z-statistic. The researcher reports that z = +1.30. This z-statistic was calculated from sample data that was drawn from a normal population. The researcher sets α = .05 and uses a two-tailed test. On the basis of his data, the researcher decides to fail to reject the null hypothesis. Did the researcher make the correct decision or did he make an error? If he made an error, what type of error did he make? Why? If he made the correct decision, what can he conclude from his study? Why?

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