Answered: The critical boundaries for a…

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Asked Oct 9, 2019

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The critical boundaries for a hypothesis test are z = +1.96 and -1.96. If the z-score for the sample data is z = -1.90, what is the correct statistical decision?

Expert Answer

Step 1

Decision rule:

Denote z as test statistic value and z(α/2) as the critical value.

Decision rule based on critical approach:

If z ≤ –z(α/2) (or) z ≥ z(α/2), then reject the null hypothesis H0.

If –z(α...

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