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17. A hypothesis that asserts there is no true difference between two population means and that the difference found between sample means is therefore accidental or unimportant is the:

A) Null hypothesis
B) Research hypothesis
C) Statistical hypothesis

18. Which of the following variables can be classified as ordered?

A) Countries taking part in the soccer World Cup
B) Models of cars imported in the country
C) Regions of birth of university students
D) The ages of students in a statistics class

19. An example of a variable that provides information for a ratio scale is:

A) English reading ability of JHS students
B) Halls of residence of GTUC students
C) Monthly salaries of college tutors
D) Performance of students in a class test

20. The range for the following set of scores is: 14, 45, 72, 38, 53, 62, 18, 34, 49, 70

A) 14
B) 58
C) 68
D) 86

21. What is the name of the conceptual framework in which the research is carried out?

A) Research hypothesis
B) Synopsis of Research
C) Research paradigm
D) Research design

Answer :

Final answer:

The null hypothesis asserts that there is no true difference between population means. Ordered variables have a natural hierarchy or ordering. A variable that provides information for a ratio scale has a true zero point. The range is the difference between the highest and lowest scores. The conceptual framework in research is the research paradigm.

Explanation:

17. The hypothesis that asserts that there is no true difference between two population means and that the difference found between sample means is accidental or unimportant is called the null hypothesis. This hypothesis is often used in statistical hypothesis testing.

18. Variables that can be classified as ordered are those that have a natural ordering or hierarchy. In this case, the variable that can be classified as ordered is D. The ages of students in a statistics class, as age is a variable that naturally has an order from youngest to oldest.

19. A variable that provides information for a ratio scale is one that has a true zero point and allows for comparison in terms of ratios. In this case, C. Monthly salaries of college tutors is an example of a variable that provides information for a ratio scale, as salaries can be compared in terms of ratios.

20. The range for a given set of scores is the difference between the highest and lowest scores. In this case, the range is 86, so the correct answer is D.

21. The name of the conceptual framework in which the research is carried out is the research paradigm. This refers to the broad perspective or approach that guides the design and conduct of the research.

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