If the Z Statistic Is Incorrectly Used in Lieu of the T

question 142

Multiple Choice

If the z statistic is incorrectly used in lieu of the t statistic when comparing two population means based on independent,small random samples from two normally distributed populations with unknown variances,then the probability of committing a Type II error __________.

• A)increases
• B)decreases
• C)remains the same
• D)is 1
• E)is 0

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Definitions:

Two Processors

A system configuration that involves two central processing units (CPUs) working together, often to increase performance or provide redundancy.

Actuator

A device used to convert a control signal into mechanical motion.

Discrete Output

Pertains to an output signal in automation systems that has only two states, commonly referred to as On or Off.

PLC

Programmable Logic Controller, an industrial digital computer which has been ruggedized and adapted for the control of manufacturing processes.