A Manufacturing Operation Consists of a Unique System That Produces

question 77

Multiple Choice

A manufacturing operation consists of a unique system that produces an average of 15.5 jet engine propulsion parts every hour. After undergoing a complete overhaul, the system was monitored by observing the number of parts produced in each of 17 randomly selected one-hour periods. The mean is 15.42 with a standard deviation of 0.16. Assume the number of parts produced is approximately normal.
-How would you define the rejection region for this test at ? = .10?

• A)t > 1.746 and t < -1.746
• B)t < -1.761
• C)t > 3.505
• D)t > 2.306 and t < -2.306
• E)t > 3.787

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Definitions:

Market Price

The current price at which a good or service can be bought or sold in a competitive market.

Break-Even Price

The price point at which total revenues equal total costs, resulting in no profit or loss for the business, used as a measure of financial sustainability.

Variable Costs

Expenses that vary in relation to a company's production volume or operational activities.

Lawn-Mowing Service

A business that provides the service of cutting the grass on residential or commercial properties.