Exhibit 9-2 The Manager of a Grocery Store Has Taken a Random

question 90

Multiple Choice

Exhibit 9-2
The manager of a grocery store has taken a random sample of 100 customers. The average length of time it took the customers in the sample to check out was 3.1 minutes. The population standard deviation is known to be 0.5 minutes. We want to test to determine whether or not the mean waiting time of all customers is significantly more than 3 minutes.
-Refer to Exhibit 9-2. The p-value is

• A)0.025
• B)0.0456
• C)0.05
• D)0.0228

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Definitions:

High-Pressure

Refers to a condition or system operating at a pressure significantly above atmospheric pressure, often used in hydraulic and pneumatic applications.

Low-Pressure

Refers to a condition or an area where the pressure is lower than the surrounding atmosphere or in comparison to a specified reference.

Liquids Evaporate

The process by which liquid substances transform into gas, usually as a result of heating or being exposed to air.

Heat Absorbed

The process of taking in thermal energy, often resulting in a temperature rise of the absorbing substance or mass.