True or False

1) If our sample size is large (n>30), we can assume the sample mean has a normal distribution.

2)When calculating confidence intervals for differences between two population means, the sample size does matter.

3)The distribution used for small sample size (n<30) changes based on the size of the sample.

4)If our sample size is small (n<30), we can assume the sample mean has a normal distribution.

5)The degrees of freedom for the sample containing 10 measurements is v=10.