The Population of Lengths of Aluminum-Coated Steel Sheets Is Normally

question 19

Multiple Choice

The population of lengths of aluminum-coated steel sheets is normally distributed with a mean of 30.05 inches and a standard deviation of 0.3 inches.What is the probability that the average length of a steel sheet from a sample of 9 units is more than 29.95 inches long?

• A).4602
• B).8413
• C).1587
• D).5397

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Definitions:

Arithmetic Operations

Essential arithmetic operations, namely addition, subtraction, multiplication, and division.

Arithmetic Operations

Primary mathematical tasks including the operations of addition, subtraction, multiplication, and division.

Arithmetic Operations

Core math functions consisting of addition, subtraction, multiplication, and division.

Arithmetic Operations

Fundamental mathematical processes including addition, subtraction, multiplication, and division.