Question

One Management professor adopted a crossword puzzle exercise in his introductory management information systems (MIS) class, because he believes that the most important effects of engaging in a crossword exercise is the great workout it gives one's brain—solving crossword puzzles requires several skills, such as spelling, reasoning, making inferences, evaluating choices, and drawing conclusions. That is, the exercise may enhance one's ability to memorize words. He wants to know whether or not the crossword puzzle exercise can accelerate the learning of MIS vocabulary and terms. A total of 109 students in his two sections of a MIS class in fall 2009 participated in an experiment involving student learning and retention of MIS terms using the crossword puzzle exercise. One section (56 students) was defined as a control group, while the other section (53 students) was defined as an experimental group. One day about two weeks before the end of semester, students in the control group were given a list of terms taken from the text book used in the course; students in the experimental group were given a crossword puzzle exercise containing terms and phrases taken from the same text book and based on the same list of terms given to the control group. Before an in-class quiz, both groups had forty minutes to use their handouts to prepare; after forty minutes, both groups were given the same quiz. To ensure that experimental subjects worked the crossword puzzle, they had to submit a complete puzzle to the professor prior to the quiz. After the quiz, the professor computed the proportion of students who received A and B grades of the quiz for these two groups. If the proportion of A and B grades is significantly high, it implies that the crossword puzzle exercise may accelerate student learning. The proportion of the experimental group is 0.7547, while the proportion of the control group is 0.6429. He then developed a two-tailed test. The null hypothesis is: the proportion of A and B grades in the experimental group that used the crossword puzzle handout as an aid in studying for their quiz is not different from the proportion of A and B grades in the control group that did not have that handout. The alternative hypothesis is: the proportion of A and B grades in the experimental group that used the crossword puzzle handout as an aid in studying for their quiz is different from the proportion of A and B grades in the control group that did not have that handout. Since he did not have any further information about the population, he used t test statistic. Did the professor develop a correct hypothesis test and use a correct test statistic? If you think yes, explain why you think yes; if no, explain why not and how to develop a correct hypothesis test.

Answer #1

>> the professor develop a correct hypothesis test

>> Let p1 be the proportion of students getting A and B grades in experimental group and p2 be the proportion of students getting A and B grades in the control group.

>> Ho: p1 - p2 =0

Ha: p1 - p2 not = 0

>> the t statistics is used is **not
correct**. he should used the **z
statictics**

>> n1 =53, n2= 56, p1 = 0.7547 , p2 = 0.6429

>> Z-statistisc = {( p1 - p2 ) - 0} / sqrt ( p( 1 - p) / {1/n1 + 1/ n2} )

Where p = ( p1n1 + p2n2 ) / (n1 + n2)

A psychology professor wants to test the effectiveness of
providing students in his introductory experimental psychology
class with an outline with his weekly lecture notes. He forms two
groups within his class, each containing 24 students. The
experimental group receives an outline of the professor’s weekly
lectures, and the control group receives no outline. Grades at the
end of the semester are compared between the two groups. On the
basis of this description, discuss what flaw is most evident in...

A psychology professor wants to test the effectiveness of
providing students in his introductory experimental psychology
class with an outline with his weekly lecture notes. He forms two
groups within his class, each containing 24 students. The
experimental group receives an outline of the professor’s weekly
lectures, and the control group receives no outline. Grades at the
end of the semester are compared between the two groups. On the
basis of this description, discuss what flaw is most evident in...

read the following descriptions of hypothetical studies.
Explain whether each is an experiment, non-experiment, or
quasi-experiment and state why for identifying, and for
explanation).
1. A coach at a high school wants to examine if reduced practice
for athletes caused higher grades. She puts all of the athletes
with low grades into the experimental group and reduces their
practice time from 2 hours to 1 hour. She puts all of the
high-achieving athletes in the control group and keeps their...

#1. Which of the following scenarios would be best described as
having a true experimental research design?
A
Research Question: Do a smaller proportion of graduates attend
graduation when it is held on a Sunday compared to Saturday?
Design: Randomly select 40 graduates the year it is held on a
Saturday and record how many attend graduation. Do the same thing
on a year the ceremony is held on a Sunday.
B
Research Question: Is a new vaccination effective at...

Using the model proposed by Lafley and Charan, analyze how
Apigee was able to drive innovation.
case:
W17400
APIGEE: PEOPLE MANAGEMENT PRACTICES AND THE CHALLENGE OF
GROWTH
Ranjeet Nambudiri, S. Ramnarayan, and Catherine Xavier wrote
this case solely to provide material for class discussion. The
authors do not intend to illustrate either effective or ineffective
handling of a managerial situation. The authors may have disguised
certain names and other identifying information to protect
confidentiality.
This publication may not be...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 16 minutes ago

asked 20 minutes ago

asked 32 minutes ago

asked 40 minutes ago

asked 1 hour ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago

asked 3 hours ago

asked 3 hours ago

asked 3 hours ago

asked 3 hours ago