An Electronics Retailer Believes That, at Most, 40% of Their

question 142

Multiple Choice

An electronics retailer believes that, at most, 40% of their cell phone inventory was sold during November. The retailer surveyed 80 dealers and found that 38% of the inventory was sold. Since 38% is less than 40%, is this difference of 2 percentage points sampling error or a significant difference? Test at the 0.05 level. The computed z = -0.37.

• A) The 2% is a significant difference.
• B) We cannot determine if the 2% is a significant difference.
• C) There is not enough information to reach a conclusion.
• D) None Apply.

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Definitions:

Somatic Nervous System

A subdivision of the peripheral nervous system (PNS); it transmits sensory signals and motor signals back and forth between the central nervous system (CNS) and the skin, muscles, and joints.

Muscles and Joints

Components of the musculoskeletal system, with muscles providing the force to move the body and joints allowing for motion between bones.

Parietal Lobes

Regions of the brain located behind the frontal lobes, involved in processing sensory information and spatial orientation.

Sense of Touch

The ability to perceive and interpret information through physical contact, using receptors in the skin to detect pressure, temperature, and pain.