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A research report includes the statement, z = 2.13, p < .05. For this hypothesis test,...

A research report includes the statement, z = 2.13, p < .05. For this hypothesis test, the used null hypothesis is rejected using an alpha level of a = .05. True False

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Answer #1

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The Z score is a test of statistical significance that helps you decide whether or not to reject the null hypothesis. The p-value is the probability that you have falsely rejected the null hypothesis.

Z scores are measures of standard deviation. a Z score of +2.13 it is interpreted as "+2.13 standard deviations away from the mean"

The probability is lesser than .05, which means there isn't any reasonable likelihood hence we can reject the null hypothesis.

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