Test Hypotheses About a Population Proportion
-A Survey Claims That $90 \%$

question 95

Multiple Choice

Test Hypotheses about a Population Proportion
-A survey claims that 9 out of 10 doctors (i.e., $90 \%$ ) recommend brand $Z$ for their patients who have children. To test this claim against the alternative that the actual proportion of doctors who recommend brand $Z$ is less than $90 \%$ , a random sample of 100 doctors results in 85 who indicate that they recommend brand $Z$ . The test statistic in this problem is approximately:

• A) \(- 1.67\)
• B) \(1.67\)
• C) \(- 1.17\)
• D) \(- 1.33\)

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Definitions:

Participative Procedure

A method or process that involves the input and active participation of all stakeholders or members in decision-making or problem-solving.

Formal Procedure

A set of established forms or methods for conducting the affairs of an organization or achieving a specific objective.

Empowerment

The process of giving individuals or groups the authority, resources, and confidence to take control of their own actions and decisions, typically aiming to increase their effectiveness and autonomy.

Governing Council

An administrative body responsible for making decisions and overseeing the policies and direction of an organization, institution, or government entity.