Pls help me with excel formula!

Dear excel experts,

I have a dataset of A1:A15. I want to make a formula stating that if 10 cells of the range A1:A15 are greater than or equal 2 then report me as "up regulated".
And If at least 10 cell of A1:A15" are less than 0.5, then report me as "down regulated".
Otherwise "no change".
In that situation, can i write excel formula like this?

IF(AND(COUNTIF(A1:A15,">=2")>=10,"up regulated", COUNTIF(AG2:AT2,"<=0.5")>=10),"down regulated", "no change")

FYI, it gives me error :-(

Thank alot in advance!