A Researcher Wants to Conduct a Before/after Study on 11

question 53

Multiple Choice

A researcher wants to conduct a before/after study on 11 subjects to determine if a treatment results in any difference in scores.The null hypothesis is that the average difference is zero while the alternative hypothesis is that the average difference is not zero.Scores are obtained on the subjects both before and after the treatment.After subtracting the after scores from the before scores, the average difference is computed to be -2.40 with a sample standard deviation of 1.21.Assume that the differences are normally distributed in the population.The observed t value for this test is ___.

• A)-21.82
• B)-6.58
• C)-2.4
• D)1.98
• E)2.33

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Definitions:

Body Language

Non-verbal communication through physical behaviors, such as gestures, postures, and expressions, which can convey emotions and intentions.

Nonverbal Communication

A form of communication that involves the transmission of messages without the use of words, such as gestures, facial expressions, and body language.

Body Language

Non-verbal communication through physical behaviors such as gestures, posture, and facial expressions.

Space Language

A conceptual term possibly referring to the way space and layout are used in communication, or it could relate to the specialized language used in the field of space exploration.