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

question 2

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 drowning deaths of children attributable to beaches is more than $0.25$ , and the sample statistics include $n = 696$ drowning deaths of children with $30 \%$ of them attributable to beaches.

• A) \(3.05\)
• B) \(- 3.05\)
• C) \(- 2.88\)
• D) \(2.88\)

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Definitions:

Thyroid Gland

An endocrine gland located in the neck, producing hormones that regulate metabolism, energy, and overall growth and development.

Pineal Gland

A small endocrine gland in the vertebrate brain that produces and secretes the hormone melatonin, regulating sleep patterns.

Adrenal Gland

A pair of endocrine glands that sit above the kidneys and produce hormones such as adrenaline and cortisol, which help control stress and other bodily functions.

Peripheral Nervous System

The part of the nervous system that consists of the nerves and ganglia outside of the brain and spinal cord.