Find the Value of the Test Statistic Z Using $z = \frac { \hat { p } - p } { \sqrt { \frac { p q } { n } } }$

question 113

Multiple Choice

Find the value of the test statistic z using $z = \frac { \hat { p } - p } { \sqrt { \frac { p q } { n } } }$
-The claim is that the proportion of accidental deaths of the elderly attributable to residential falls is more than 0.10, and the sample statistics include n = 800 deaths of the elderly with 15% of them attributable to residential falls.

• A) \(3.96\)
• B) \(4.71\)
• C) \(- 3.96\)
• D) \(- 4.71\)

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Definitions:

Experimental Group

A group of subjects in an experiment who are exposed to the variable under investigation, to test a hypothesis.

Confirm

To establish the truth, accuracy, validity, or genuineness of something.

Predictions

The act of forecasting future events or outcomes based on current or past data.

Confounding Variables

External factors that can affect the outcome of an experiment, making it unclear whether the results are due to the independent variable or some other influence.