When the Necessary Conditions Are Met, a Two-Tail Test Is $\hat { p } _ { 1 }$

question 81

Short Answer

When the necessary conditions are met, a two-tail test is being conducted to test the difference between two population proportions. The two sample proportions are $\hat { p } _ { 1 }$ = 0.21 and $\hat { p } _ { 2 }$ = 0.15, and the standard error of the sampling distribution of are $\hat { p } _ { 1 }$ - $\hat { p } _ { 2 }$ is 0.018. The calculated value of the test statistic will be: $\begin{array}{|l|l|}\hline A&\text {t=-3.33 }\\\hline B&\text {z=3.33 }\\\hline C&\text {t=3.33 }\\\hline D&\text { None of these choices are correct.}\\\hline\end{array}$

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Definitions:

Polychaetes

Marine annelid worms known for their bristled segments, diverse in marine environments.

Parapodia

Paired, lateral appendages found on each segment of polychaetes and some other annelids, used for locomotion and sometimes respiratory functions.

Radula

A rasping, tongue-like organ found in many molluscs, used for feeding by scraping or cutting food before ingestion.

Earthworms

Terrestrial invertebrate worms belonging to the phylum Annelida, known for their role in aerating soil and breaking down organic matter.