A Professor Gives the Same Test Twice

question 79

Multiple Choice

A professor gives the same test twice. Most of those who failed it the first time get scores close to the class average the second time. Most of those who did very well the first time also get scores close to average the second time. Therefore the test has

• A) high reliability.
• B) low reliability.
• C) average validity.
• D) high validity.

Identify variables that can follow a binomial distribution.

Understand the concept and steps involved in hypothesis testing.

Comprehend the importance of probability in the research process.

Identify and understand different types of errors in hypothesis testing.

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Definitions:

Hand-off-automatic Circuit

A control circuit allowing equipment operation in hand (manual control), off, or automatic modes, depending on the selected setting.

Operator

An operator is a person or device responsible for managing, controlling, or executing the operation of machines, systems, or processes.

Pilot Device

An interface component used to control and monitor the operation of machinery or equipment, often initiating the start or stop commands.

Control Coil

The coil in a relay or contactor that, when energized, creates a magnetic field to pull in contacts, controlling circuit continuity.