Provide an Appropriate Response

question 138

Multiple Choice

Provide an appropriate response.
-An electronics store receives a shipment of eight boxes of calculators. Each box contains ten calculators. A quality control inspector chooses a box by putting eight identical slips of paper numbered 1 to 8 into a hat,
Mixing thoroughly and then picking a slip at random. He then chooses a calculator at random from the box
Selected using a similar method with ten slips of paper in a hat. He repeats the process until he obtains a
Sample of 5 calculators for quality control testing. Does this sampling plan result in a random sample? Simple
Random sample? Explain.

• A) Yes; yes. The sample is random because all calculators have the same chance of being selected. It is a simple random sample because all samples of 5 calculators have the same chance of being selected.
• B) No; yes. The sample is not random because not all calculators have the same chance of being selected. It is a simple random sample because all samples of 5 calculators have the same chance of being selected.
• C) No; no. The sample is not random because not all calculators have the same chance of being selected. It is not a simple random sample because some samples are not possible, such as a sample containing 5
• Calculators from the same box.
• D) Yes; no. The sample is random because all calculators have the same chance of being selected. It is not a simple random sample because some samples are not possible, such as a sample containing 5 calculators
• From the same box.

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Definitions:

Anterior Cingulate Cortex

A region of the brain involved in functions such as decision making, emotion, and the regulation of autonomic nervous system operations.

Dissociative Disorder

A psychological disorder marked by a disruption and inconsistency among one's thoughts, memories, environment, behaviors, and sense of self.

Dr. Jekyll

A character from Robert Louis Stevenson's novella, representing the good side of a person's dual nature.

Mr. Hyde

A fictional character from Robert Louis Stevenson's novella "Strange Case of Dr Jekyll and Mr Hyde," representing the evil side of Dr. Jekyll unleashed by a potion.