In a Manufacturing Process a Machine Produces Bolts

question 103

Multiple Choice

In a manufacturing process a machine produces bolts. The lengths of the bolts follow a normal distribution with an average of 3 cm and a variance of 0.03 cm2. If we randomly select three bolts from this process:
-What is the probability the mean length of the bolt is at least 3.16 cm?

• A)0.9772
• B)0.0548
• C)0.9452
• D)0.4452
• E)0.0228

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Definitions:

Preservationists

Individuals or groups dedicated to the protection and preservation of natural resources, historical sites, or cultural artifacts.

Wise-Use Resource

A concept promoting the sustainable management and use of natural resources for economic and social benefits.

Henry David Thoreau

A 19th-century American essayist, poet, and philosopher, best known for his book "Walden," a reflection upon simple living in natural surroundings.