At the Normal Service Interval for an Oil Change, the Technician

question 45

Multiple Choice

At the normal service interval for an oil change, the technician notices the oil level reads just below the normal level on the dipstick before beginning to drain the oil. Technician A says that all engines will consume some amount of oil within the normal service interval. Technician B says that the technician should check any TSBs related to oil consumption and inform the customer. Who is correct?

• A) A only
• B) B only
• C) Both A and B
• D) Neither A nor B

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Definitions:

Population Parameters

Statistical measures that summarize characteristics for an entire population, such as mean, variance, or standard deviation.

Confidence Interval

A range of values, derived from sample data, that is likely to contain the value of an unknown population parameter, with a specified level of confidence.

Null Hypothesis

A statistical hypothesis that assumes no significant difference or effect exists between certain characteristics of a population or data set.

PHStat

An Excel add-in that enhances and expands the statistical capabilities of Microsoft Excel by providing tools for statistical analysis.