A Pilot Checks for Water in the Gas Before Flying

question 136

Multiple Choice

A pilot checks for water in the gas before flying a small airplane.How does she do it?

• A) Drain a little bit of gas from the bottom and look for two layers.
• B) Smell it.
• C) Shake the wings.
• D) Pipet a sample from the top of the tank and look for two layers.
• E) Check the gas gauge.

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Definitions:

Sample Mean

The average of a set of numerical values.

Control Limits

Statistical boundaries set in control charts that are used in process control to detect times when a process is out of control or behaving anomalously.

Standard Errors

The standard deviation of the sampling distribution of a statistic, typically the mean.

Control Chart

A control chart is a statistical tool used to monitor, control, and improve process performance over time by identifying sources of variation.