The Principal of a Middle School Claims That Test Scores $\sigma = 14.7$

question 140

Multiple Choice

The principal of a middle school claims that test scores of the seventh-graders at her school vary less than the test scores of seventh-graders at a neighboring school, which have variation described by $\sigma = 14.7$

• A) \(\mathrm { H } _ { 0 } : \sigma = 14.7\)
• \(\mathrm { H } _ { 1 } : \sigma < 14.7\)
• B) \(\mathrm { H } _ { 0 } : \sigma > 14.7\)
• \(\mathrm { H } _ { 1 } : \sigma \leq 14.7\)
• C) \(H _ { 0 } : \sigma < 14.7\)
• \(\mathrm { H } _ { 1 } : \sigma > 14.7\)
• D) \(\mathrm { H } _ { 0 : \sigma } = 14.7\)
• \(\mathrm { H } _ { 1 } : \sigma > 14.7\)

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Definitions:

Offspring

The direct descendants or young produced by an organism, either through sexual or asexual reproduction.

Dispersal Pattern

The way in which individuals in a population space themselves out over their environment, influencing population dynamics and community structure.

K-selected

Characterizes species that produce fewer offspring, with a larger investment in each, typically adapting to stable environments where competition is strong.