def percent_coverage(cmu_dict, target_list):
	
	"""
	Given a target list of words, returns what fraction of them is
	included in the cmu_dict.

		cmu_dict:		Iterable[str]
		target_list: 	Iterable[str]

		percent: 		float
	"""
	num_covered = 0
	for word in target_list:
		if word.upper() in cmu_dict or word in cmu_dict:
			num_covered += 1
	return num_covered / len(target_list)