Mathematics Homework Help

In order to use the methods to compare two proportions, we need to check our assumptions.  Which of the following conditions do we need to check?

Select all that apply.

1.  The samples are not more than 10% of the populations.

2.  The data is drawn independently and at random.

3.  The two groups are independent. 

4.  There are at least 10 successes and 10 failures in each group.