A Random Sample of N Measurements Was Selected from a Population

question 88

Short Answer

A random sample of n measurements was selected from a population with unknown mean μ and known standard deviation σ. Calculate a 95% confidence interval for μ for the given situation. Round to the nearest hundredth when necessary. $n = 100 , \bar { x } = 58 , \sigma = 20$
A) $58 \pm 3.92$
B) $58 \pm 3.29$
C) $58 \pm 39.2$
D) $58 \pm 0.39$

• A) \(58 \pm 3.92\)
• B) \(58 \pm 3.29\)
• C) \(58 \pm 39.2\)
• D) \(58 \pm 0.39\)

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Definitions:

Adjectives

Words used to describe or modify nouns, giving more information about their characteristics.

Adverbs

Words that modify verbs, adjectives, or other adverbs, often to indicate manner, degree, or frequency.

Omitted

Left out or excluded, either intentionally or by mistake, from something such as a document, conversation, or list.

Imprecise

Lacking accuracy or exactness, often due to vague or unclear information.