A Researcher Selects a Sample of 49 Participants from a Population

question 19

Multiple Choice

A researcher selects a sample of 49 participants from a population with a mean of 12 and a standard deviation of 3.5.What is the probability of selecting a sample mean of 13 or larger from this population?

• A) equal to the probability of selecting a score above the mean
• B) about one standard deviation below the mean
• C) less than .10
• D) greater than .31

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Definitions:

PLC Motion Control System

A PLC (Programmable Logic Controller) Motion Control System is an automated system that uses PLCs to manage and control the movement of machinery, components, or the system itself, offering precise control over complex motion tasks.

Servo Motors

Motors that incorporate a feedback mechanism to control the speed and position accurately, commonly used in precision positioning tasks.

Open Communications Networks

Networks that support communication protocols which are publicly available and can be used across different platforms and devices.

Proprietary Protocol

A communication protocol developed by a specific company for exclusive use, often causing compatibility issues with other systems.