Kara Danvers (Supergirl) has always relied on her strength to win fights. But what happens when she meets an alien just as strong? Her sister is training her to be a more technical fighter so that Supergirl can meet any challenge. The data below record the significant strikes during randomly selected training sessions 6 months apart. Is Kara showing improvement in her fighting? Strikes (pre):2932443419
Strikes (post):5145689264

Write the Hypotheses:
H_0:, the mean difference in between and is
H_a:, the mean difference in between and is