1-Which of the following should NOT be used to determine if a pooled standard deviation can be used to calculate the standard error?

1-The p-value was less than 0.05 in an equal variance test.

2-It makes theoretical sense that the two groups would have the same standard deviation in their populations.

3-The larger standard deviation is less than twice the smallest standard deviation.

2-A paired t-test is just a one-sample t-test but the variable tested is a difference between paired observations.

True

False

3- Let's say you were to conduct a study to determine if there was a difference in the average blood lead levels between children who live in Flint and children who reside in Flint's suburbs. 100 children from Flint and 100 children from Flint's suburbs were randomly selected. Their blood lead levels were accurately measured. Which test would be most appropriate for determining if there's a difference in average blood lead levels?

1-One-sample t-test/ Paired t-test 2-Two-sample t-test 3-I would need to see the data before I could make this determination