IOP2601 Assignment 2 (COMPLETE ANSWERS) Semester 2 2025 – DUE 25 August 2025; 100% correct solutions and explanations.

IOP2601 Assignment 2 (COMPLETE ANSWERS) Semester 2 2025 – DUE 25 August 2025; 100% correct solutions and explanations.MODULE IOP2601 SEMESTER 2 2025 ASSESSMENT 2 Closing date: 25 August 2025 at 14:00 Total: 50 marks Lessons: 7-10 Use computational formulas, where applicable, and round off your final answer to two decimal places. (Values read from tables must be given unaltered) QUESTION 1 [13] 1.1 _____ is a technique applied to samples in order to make inferences about populations. (1) 1.2 The single-sample t-test is used when you have a single set of scores and are investigating whether the mean of this sample equals a known mean. (1) 1.3 A scale possesses the property of equal intervals if the difference between all points on that scale is uniform. Is this statement true or false? (1) 1.4 State the type of error that occurs when a researcher rejects a null hypothesis that is actually true. (1) 1.5 What is the team used when a quantity that does not change and always has the same value? (1) 1.6 Properties of observations that can assume different values are called_____, whereas a variable that can assume any value is known as _____. (2) 1.7 Below are four variables, determine their