A surgeon decided to compare sutures and staples in closing incisions. When he finished operating on a patient, he flipped a coin in order to determine if he would use sutures or staples to close the wound. Six months later, he called each patient and found out whether he or she was satisfied, yes vs. no, with how the scar looked. The results appear below. Use hypothesis testing to determine if there€™s a difference in satisfaction between the two techniques.

Observed Frequencies Not Satisfied Satisfied Sutures Staples 13 12