Aluminum Castings Are Processed in Lots of Five Each

question 67

Multiple Choice

Aluminum castings are processed in lots of five each.A sample of two castings is randomly selected from each lot for inspection.A particular lot contains one defective casting; and x is the number of defective castings in the sample.P(x=1) is _______.

• A)0.2
• B)0.4
• C)0.6
• D)0.8
• E)1.0

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Definitions:

Standard Error

A statistical measure that quantifies the variability or dispersion of a sample mean around the population mean.

Population Size

The total number of individuals or items in the group that is being studied in a statistical analysis.

Normal Population

A statistical term referring to a population that follows a normal distribution where a large number of instances are clustered around the mean.

Probability Distribution

This mathematical method determines the chances of various results happening in an experiment.