IOP2601 Assignment 3 Semester 1 2026 – Due 20 April 2026

Description

Instructions:
– Where applicable, round off your final answer to two decimal places.
– Values read from statistical tables must be given unaltered.
– Using AI tools to generate answers is prohibited and will result in penalties. However, you
can disclose how you used AI to check your work. If there were any differences between
your calculations and the AI’s results, you must explain those too.
– Show all workings/calculations clearly, and use only formulas provided in this module.
– Although we may accept handwritten work, we encourage students to submit typed responses.
– Remember to convert your document into Pdf before submission.
– Where applicable, apply APA referencing style.

QUESTION 1

[12]

1.1 Indicate whether the following statements are True or False. Motivate your answer.
a) For this module, the level of significance is always given as 0,001. (2)

b) A Type I error is made by rejecting the null hypothesis when it is in fact true.

(2)
c) If you get a negative value for the F-test, this means the test statistic falls inside the rejection
area.

(2)
1.2 State whether the following alternative hypothesis are nondirectional or directional. Justify your
answer.
(6)
a) A notable difference exists in the attitudes of students registered for semester 1 compared to
those registered for semester 2 at UNISA.
b) Consistent interaction with course content is associated with improved academic achievement.
c) IOP2601 students who engage with lecturer feedback tend to achieve higher academic
performance than those who do not review the feedback.

question 2……………………….