I need to find out if this is a 1-tailed test or a 2-tailed test:

=T.DIST.RT([test statistic], [degree of freedom])

=T.DIST.2T([test statistic], [degree of freedom])

Here is the info I have:

I am trying to prove that the house listing national average is higher than the sample I chose. The national average is = $342,365, below is the housing list price I have from my sample.

Ho: u=$250,762

H1: u>$250,762

Significance level= 0.05