The Lengths of Screws Produced by a Machine Are Normally

question 173

Multiple Choice

The lengths of screws produced by a machine are normally distributed, with a mean of 3 cm and a standard deviation of 0.2 cm. What can we conclude from this?

• A) Approximately 68% of all screws have lengths between 2.8 and 3.2 cm.
• B) Approximately 95% of all screws have lengths between 2.8 and 3.2 cm.
• C) Just about all screws have lengths between 2.8 and 3.2 cm.
• D) Just about all screws have lengths between 2.9 and 3.1 cm.

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Definitions:

Coconuts

Tropical fruits with a hard shell, edible white flesh, and clear liquid inside, often found in coastal regions.

Factor Of Production

An input used in the creation of a good or service; these include labor, capital, land, and entrepreneurship.

Factor Market

The factor market is where services of the factors of production (such as labor, land, and capital) are bought and sold.

Lunch

A meal typically eaten in the middle of the day, between breakfast and dinner.