A Restaurant Manager Wants to Determine the Percent of Time

question 171

Multiple Choice

A restaurant manager wants to determine the percent of time the servers are working and idle using work sampling. His calculation shows that he needs to take a sample of 100 based on a z value of 2. If he wants to use a z value of 3, how many more samples does he need to take?

• A) 225
• B) 125
• C) 150
• D) 50
• E) There is not enough information.

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Definitions:

Tropical Forests

Diverse ecosystems located near the equator that experience high average temperatures and significant annual rainfall.

Million Species

A term often referenced in discussions about biodiversity, indicating the vast number of species on Earth, many of which remain unclassified or at risk of extinction.

Environmental Policies

Guidelines and regulations aimed at managing human impact on the environment, promoting sustainability, and protecting natural resources.

Ecosystem Diversity

The variety of different ecosystems within a region, contributing to the overall biodiversity and health of the environment.