11.
Which of the following steps would be included in hypothesis testing?
1. State the null and alternative hypothesis.
2. Set the significance level before the research study.
3. Eliminate all outliers.
4. Obtain the probability value using a computer program such as SPSS.
5. Compare the probability value to the significance level and make the statistical decision.

12.
Which one of the following is not the correct property of normal distribution?

20.
Arrange the following steps in sequence in constructing histogram.
1. Convert frequency table into equal class interval.
2. Check that class intervals are shown on X-axis and frequencies on the Y-axis.
3. Check that height of the rectangle is proportional to the respective frequency of grouped data.
4. Check that width of the rectangle represent the class interval.
5. Each rectangle is then joined.
Select the correct answer using the options given below