Based on a Sample of 30 Randomly Selected Years, a 90

question 7

Multiple Choice

Based on a sample of 30 randomly selected years, a 90% confidence interval for the mean annual precipitation in one city is from 48.7 inches to 51.3 inches.Find the margin of error.

• A)0.39 inches
• B)0.10 inches
• C)2.6 inches
• D)1.3 inches
• E)There is not enough information to find the margin of error.

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Definitions:

Invasive Species

Organisms that are introduced to a new habitat, where they proliferate, often harming native species and ecosystems.

Natural Balance

The state of equilibrium in natural systems, achieved through the interdependence and interactions among organisms and their environment.

Native Species

Species that have originated and evolved in a specific geographical area without human intervention.

Particular Community

A specific group of individuals or populations living in a common geographical area or sharing similar characteristics or interests.