A Random Sample of Size 15 Is Taken from a Population

question 126

Multiple Choice

A random sample of size 15 is taken from a population assumed to be normal,and $\bar { X }$
= 1) 2 and s = .6.Calculate a 98 percent confidence interval for ?.

• A) \(\left[ \begin{array} { l l }
• .675 & 1.725
• \end{array} \right]\)
• B) \([ .79411\( \quad\)\( \quad\) .606 ]\)
• C) \(\left[ \begin{array} { l l }
• .876 & 1.524
• \end{array} \right]\)
• D) \(\left[ \begin{array} { l l }
• .882 & 1.518
• \end{array} \right]\)

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Definitions:

Indicator

A measurable variable used to demonstrate the progress toward achieving a specified goal or to assess the condition of a particular aspect of an ecosystem or economy.

Ecosystem Structure

The arrangement of biotic and abiotic components within an ecosystem, determining how it functions and supports life.

Species Diversity

The variability among living organisms from all sources, including terrestrial, marine, and other aquatic ecosystems and the ecological complexes of which they are a part.