An Average Department Store Sells 150 Men's Suits Per Year

question 78

Multiple Choice

An average department store sells 150 men's suits per year. The men's suit departments at a particular national chain of stores claim they sell more than the industry average. In 45 of their stores, they sold, on the average, 190 suits per year with a population standard deviation of 30. What is the test value for their claim?

• A) 0.20
• B) 1.33
• C) 5.14
• D) 8.94

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Definitions:

K

Symbol for Potassium, a chemical element with atomic number 19, essential for various bodily functions including nerve signal transmission and muscle contraction.

[HCO3-]

Bicarbonate ion, a base often involved in maintaining pH balance in biological systems.

pH

A scale used to specify the acidity or basicity of an aqueous solution, with values typically ranging from 0 (acidic) to 14 (basic).

HCl

Hydrochloric acid, a strong corrosive acid that is a simple diatomic molecule consisting of hydrogen and chlorine, used in many industrial and scientific applications.