Tyesha found that the z -statistic was 2 point 1 and that the critical z -values were negative 1 point 9 6 and 1 point 9 6 Which of the following is a valid conclusion based on these results?

Compare the test statistic, z = 2.1, with the critical values −1.96 and 1.96. Because 2.1 is greater than 1.96, it falls in the rejection region, so the null hypothesis is rejected. The valid conclusion is “One can reject the null hypothesis.”

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