In the Past,of All the Students Enrolled in "Basic Business

question 93

Multiple Choice

In the past,of all the students enrolled in "Basic Business Statistics" 10% earned A's 20% earned B's,30% earned C's,20% earned D's and the rest either failed or withdrew from the course.Dr Johnson is a new professor teaching "Basic Business Statistics" for the first time this semester.At the conclusion of the semester,in Dr.Johnson's class of 60 students,there were 10 A's,20 B's,20 C's,5 D's and 5 W's or F's.Assume that Dr.Johnson's class constitutes a random sample.Dr Johnson wants to know if there is sufficient evidence to conclude that the grade distribution of his class is different than the historical grade distribution. If we assume at = .05 that the null hypothesis is rejected,make a one-sentence managerial conclusion.

• A)Dr.Johnson's class grades don't differ from the historical course grade distribution.
• B)Dr.Johnson's class grades are higher than the historical course grade distribution.
• C)Dr.Johnson's class grades are Lower than the historical course grade distribution.
• D)We cannot draw a conclusion about the difference between Dr.Johnson's grades and the historical course grade distribution.

---

Definitions:

They're

Contraction of "they are," used as a subject in a sentence to refer to multiple people or entities.

Than

A conjunction used in comparisons to highlight differences between two things.

Phantom Menace

A perceived threat or problem that either does not exist or is greatly exaggerated.

Return of the Jedi

The third film in the original Star Wars trilogy, released in 1983, focusing on the Rebel Alliance's final battle against the Empire.