A University Advisor Wants to Determine If There Is a Difference

question 67

Essay

A university advisor wants to determine if there is a difference in the total amount of time spent studying between students taking an online version and a traditional class version of a certain course.The following table contains the sample sizes of each group,and the rank sums for the Wilcoxon rank-sum test. a.Specify the competing hypothesis to determine whether the median study time for online students differs from the median study time for traditional students.
b.What is the value of the Wilcoxon rank-sum test statistic W?
c.Assuming W follows a normal distribution,what is the value of the corresponding test statistic?
d.At the 1% significance level,what is the decision and conclusion?

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Definitions:

Sphere of Attention

The scope or limit of an individual's focus at any given moment, encompassing what can be noticed or maintained in awareness.

Working Memory

A cognitive system responsible for temporarily holding information available for processing, important for reasoning and the guidance of decision-making and behavior.

Short-Term Memory

A limited-capacity store that can maintain unrehearsed information for about 20 to 30 seconds.

Phonological Loop

A component of working memory model that deals with the auditory information, playing a key role in the processing and storage of verbal and auditory data.