QUESTION 1
An English test was administered to two classes of secondary school students. Explain the distribution of the scores and the standard deviation shown in the two graphs above.
QUESTION 2
Refer to the table above. Interpret the mean and standard deviation
QUESTION 3
The research was conducted on the opinion of teachers on students bringing smartphones to school. A sample of 200 female and 165 male teachers were asked the question ‘Should students be allowed to bring smartphones to school? The results of the study are shown below:
Based on the information shown in the table:
- Write a suitable null and alternate hypothesis.
- Why was the chi-square used?
- What conclusion can be drawn from the table above?
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