Which test do you use to solve this problem One-sample or independent samples t-test?

Question

Over the summer I asked my statistics students to report their gender and their level of statistics anxiety. Using a one-tailed test, determine whether females have more statistics anxiety compared to males. Higher numbers indicate higher levels of anxiety.

Answer 1

indep. samples..

I would have Males vs Females

Answer 2

so I would have to use the independent samples t test t=m1-m2/s(m1-m2) and the standard error

so what would be my df

Answer 3

Use n1 + n2 - 2 for degrees of freedom.

Note: n = sample size