A University Advisor Wants to Determine If There Is a Difference

question 73

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?

• 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?

---

Definitions:

Oval Window

A membrane-covered opening that leads from the middle ear to the vestibule of the inner ear, where sound vibrations are transmitted.

Cochlear Duct

A fluid-filled spiral tunnel in the inner ear and a key component of the cochlea, responsible for sound perception.

Scala Vestibuli

A perilymph-filled cavity inside the cochlea of the inner ear, which sits above the scala media and leads from the oval window to the helicotrema at the apex of the cochlea.

Bony Labyrinth

A complex system of channels and cavities within the temporal bone of the skull, involved in hearing and balance.