A Random Sample of 49 Cast Aluminum Pots Is Taken

question 90

Multiple Choice

A random sample of 49 cast aluminum pots is taken from a production line once every day. The number of defective pots is counted. The proportion of defective pots has been closely examined in the past and is believed to be 0.05. The sample proportions for the week are shown in the accompanying table. Is the production process in control?

• A) No, because the sample proportions show a downward trend
• B) No, because the sample proportions fall within the upper and lower control limits
• C) Yes, because the sample proportions show a downward trend
• D) Yes, because the sample proportions fall within the upper and lower control limits

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Definitions:

Particular Affirmative

A statement in logic that affirms the inclusion of some, but not necessarily all, members of a category.

Quantity

The property of something that determines its magnitude; the amount or number of a material or immaterial thing not usually estimated by spatial measurement.

Argument

A series of statements or reasons made to persuade others that an idea or proposition is true or valid.

Subject Class

A category or group of subjects sharing common characteristics or attributes.