[Company name]
IOP2601
Assignment 3
Semester 2 2024 -
DUE 25 September
2024
QUESTIONS WITH DETAILED ANSWERS
, IOP2601 Assignment 3 Semester 2 2024 - DUE 25 September 2024
QUESTION 1 [5]
1.1 Indicate whether the following statements are True or False.
a) A non-directional hypothesis is used when there is no prior theoretical basis for
predicting the specific direction of the effect or relationship between variables. (1)
b) In a study testing a directional hypothesis, the critical region for rejecting the null
hypothesis is split into two tails of the distribution. (1)
c) A non-directional hypothesis always predicts that there will be no difference or
relationship between variables. (1)
1.2 A researcher is investigating the effectiveness of a new teaching method in
improving students’ test scores relative to a traditional teaching method. The researcher
anticipates that the new method will result in significantly higher test scores based on
prior research findings. Based on this context, formulate a directional hypothesis. (2)
QUESTION 2 [15]
A researcher is investigating whether South African high school students who use the
new digital learning platform achieve higher academic performance compared to those
who receive the traditional classroom instruction. Prior research indicates that the digital
learning platform is expected to result in higher academic performance scores. Table 1
provides the scores obtained from 100 randomly selected students. Table 1 Academic
Performance Scores N x̅ s2 Digital Learning Platform (DLP) 31 5,34 1,28 Traditional
Classroom Instruction (TCI) 31 4,94 1,29
2.1 Formulate an appropriate null hypothesis (H0) in symbol and in words. (2)
IOP2601
Assignment 3
Semester 2 2024 -
DUE 25 September
2024
QUESTIONS WITH DETAILED ANSWERS
, IOP2601 Assignment 3 Semester 2 2024 - DUE 25 September 2024
QUESTION 1 [5]
1.1 Indicate whether the following statements are True or False.
a) A non-directional hypothesis is used when there is no prior theoretical basis for
predicting the specific direction of the effect or relationship between variables. (1)
b) In a study testing a directional hypothesis, the critical region for rejecting the null
hypothesis is split into two tails of the distribution. (1)
c) A non-directional hypothesis always predicts that there will be no difference or
relationship between variables. (1)
1.2 A researcher is investigating the effectiveness of a new teaching method in
improving students’ test scores relative to a traditional teaching method. The researcher
anticipates that the new method will result in significantly higher test scores based on
prior research findings. Based on this context, formulate a directional hypothesis. (2)
QUESTION 2 [15]
A researcher is investigating whether South African high school students who use the
new digital learning platform achieve higher academic performance compared to those
who receive the traditional classroom instruction. Prior research indicates that the digital
learning platform is expected to result in higher academic performance scores. Table 1
provides the scores obtained from 100 randomly selected students. Table 1 Academic
Performance Scores N x̅ s2 Digital Learning Platform (DLP) 31 5,34 1,28 Traditional
Classroom Instruction (TCI) 31 4,94 1,29
2.1 Formulate an appropriate null hypothesis (H0) in symbol and in words. (2)
