Suppose n₁ = 98, n₂ = 83, x₁ = 4, and x₂ = 81. Choose the correct answer below.
1) The sampling distribution of the differences in the sample proportions cannot be approximated with a normal distribution.
2) The sampling distribution of the differences in the sample proportions can be approximated with a normal distribution.
3) The sampling distribution of the differences in the sample proportions is always normally distributed.
4) The sampling distribution of the differences in the sample proportions is always skewed.