A Random Sample of Size 36 Is Taken from a Population

question 18

Multiple Choice

A random sample of size 36 is taken from a population with mean µ = 17 and standard deviation σ = 6. The probability that the sample mean is between 15 and 18 is ________.

• A) 0.0228
• B) 0.8186
• C) 0.8413
• D) 0.8641

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Definitions:

Operating Time

The total time during which a machine, system, or facility is functional and performing its intended tasks.

Product Layout

A type of factory layout where equipment and workstations are arranged in line with the sequence of operations for a specific product.

Equipment Utilization

A measure of how effectively a business or operation uses its equipment in terms of maximizing output and minimizing idle time.

Line Balancing

Line balancing involves arranging a production line so that each workstation has an approximately equal amount of work.