Yes, if "N" is given elsewhere, or if you've used it to stand in for something else.
In crochet *and* knitting, instructions inside pairs of * * or ( ) or [ ] are meant to be repeated however many times the instructions say:
1) *ch4 sc* 6 times....
2) (ch4 sc) 6 times....
3) [ch4 sc] 6 times...
all mean the same thing.
Sometimes, more complex patterns will use sets of these punctuation marks inside other sets. If so, each punctuated set has its own number of repetitions.