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(6) In adults, is AGE still related to CONFIDENCE Scores? (1 pt. total)    (a) Define...

(6) In adults, is AGE still related to CONFIDENCE Scores? (1 pt. total)   

(a) Define each variable. Is it a DEPENDENT VARIABLE or an INDEPENDENT variable?

(b) Would this question have a between-subjects or within-subjects design? (0.3 pts)

(c) What kind of statistical test would be most appropriate, a one-tailed test or a two-tailed test? Explain your reasoning below.

Math   Statistics-And-Probability   
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Answer #1

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a.

Independent Variable :Age of adults

Dependent Variable :Confidence Scores of adults

b.

Between-subjects (or between-groups) study design: different people test each condition, so that each person is only exposed to a single user interface. In  Within-subjects (or repeated-measures) study design: the same person tests all the conditions (i.e., all the user interfaces). Here each adult face one condition each, there' no repeated test on the same sample.

Answer: Hemce, this is a Between Subjects Design

c.

A 2 tailed test should be done , as we need to conclude if there' a relation between the 2 variables. Whether it is a positive or negative relation is not what we have find out.

Answer: 2 tailed Test

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