THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION

question 76

Multiple Choice

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
Independent samples of math scores from students in the U.S.and Europe were collected from normal populations.A sample of 50 students from the U.S.had an average score of 570 while a sample of 50 European students had an average score of 540.The population standard deviations for the average scores of the US and European students are 102 and 115 respectively.
-What is the upper confidence limit of the 95% confidence interval for the difference between the population means?

• A)65.65
• B)51.73
• C)72.61
• D)94.23

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Definitions:

Classical Conditioning

A learning process that occurs when two stimuli are repeatedly paired: a response which is initially elicited by the second stimulus is eventually elicited by the first stimulus alone.

Conditioned Response (CR)

The learned reaction or response to a previously neutral stimulus, after the stimulus has been repeatedly presented along with an unconditioned stimulus.

Unconditioned Stimulus (US)

A stimulus that naturally triggers a reflexive response without prior learning.

Extinction

In behavioral psychology, the gradual weakening and disappearance of a conditioned response when the conditioned stimulus is presented without the unconditioned stimulus.