In a Two-Tail Test for the Population Mean, the Null $\alpha$

question 37

Short Answer

In a two-tail test for the population mean, the null hypothesis will be rejected at the $\alpha$ level of significance if the value of the standardised test statistic z is such that: $\begin{array}{|l|l|}\hline \text { A. } & z> z_{\alpha} . \\\hline \text { B. } & z< -z_{\alpha} . \\\hline \text { C. } & -z_{\alpha}< z< z_{\alpha} . \\\hline \text { D. } & |z|> z_{\alpha / 2} . \\\hline\end{array}$

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Definitions:

Subcutaneous

Pertaining to under the skin, often referring to a route of medication administration.

Injection

The act of administering a liquid, such as a drug or vaccine, directly into a body tissue, often through a syringe and needle.

Angle

The figure formed by two rays, called the sides of the angle, sharing a common endpoint termed the vertex.

Retention Enema

A medical procedure involving the introduction of fluid into the rectum, which is meant to be held in for a designated period to achieve a therapeutic effect.