In Testing for the Significance of the Difference Between Two

question 1

Multiple Choice

In testing for the significance of the difference between two sample means when the sample size is small,we may assume equal population variances if

• A)sample sizes are exactly the same.
• B)sample sizes are varied.
• C)sample sizes are approximately equal.
• D)none of the above;we cannot assume equal population variance

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Definitions:

Public Concern

Issues that generate a significant level of interest, worry, or debate among the general public, often influencing social attitudes, policy making, and media coverage.

Sensory Adaptation

A change over time in the responsiveness of the sensory system to a constant stimulus, often leading to a decrease in sensitivity to that stimulus.

Prolonged Stimulation

Continuous or extended exposure to a stimulus over a considerable period of time.

Neurotransmitter

Chemical messengers that transmit signals across a chemical synapse, from one neuron (nerve cell) to another 'target' neuron, muscle cell, or gland cell.