the number of tournaments, which you are supposed to fill in, is supposed to represent the number of times he caught a specific number of fish. for example, if the number of fish was 25, he caught 25 fish during one of his tournaments, so you would fill in 1 beside the number 25.
Z-scores (left tail) of a given variable X are calculated by Z(x)=(x-mean)/standard deviation. For Mary: Zm(124)=(124-110)/8=14/8=1.75 For Carrie: Zc(289)=(289-250)/20=39/20=1.95 therefore Zc>Zm
