A Doctor at a Local Hospital Is Interested in Estimating

question 54

Multiple Choice

A doctor at a local hospital is interested in estimating the birth weight of infants. How large a sample must sheselect if she desires to be 90% confident that her estimate is within 2 ounces of the true mean? Assume that s =5 ounces based on earlier studies.

• A) 17
• B) 16
• C) 5
• D) 4

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Definitions:

Granite

A coarse-grained igneous rock composed mainly of quartz, feldspar, and mica, commonly used in construction.

Metamorphic Rocks

Rocks that have undergone transformation in their mineral composition or structure due to extreme heat, pressure, or chemically active fluids.

Effervescence

The property of releasing gas bubbles when reacting with a liquid; often observed in minerals and compounds that fizz or bubble when acid is applied.

Magmatism

The process of magma generation, movement, and solidification, which contributes to the formation of igneous rocks.