Which of the Following Is True of the One- Shot

question 8

Multiple Choice

Which of the following is true of the one- shot case study preexperimental design (X O₁) ?

• A) It does not provide a basis of comparing the level of O₁ to what would happen when X was absent.
• B) There is no random assignment of test units.
• C) In this design, a group of test units is measured twice.
• D) Both A and B are correct.

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Definitions:

Green 9-pin

A standard connector used for diagnostic ports on heavy-duty vehicles, allowing access to the vehicle's data bus.

J1939 Bus

A term used interchangeably with J1939 Data Backbone, referring to the communication network based on the J1939 standard in automotive and industrial vehicles.

Bus Connectors

Components that are used to link individual bus bars or to connect devices to a bus system, facilitating communication or power transmission.

J1939 Data Bus

A communications network protocol based on CAN (Controller Area Network), designed for heavy-duty vehicles to exchange electronic information.