One estimate for the average height for men in the United States is 5 feet 9.3 inches with a standard deviation of 2.94 inches. The average height for men in Cambodia is estimated to be 5 feet 4.8 inches with a standard deviation of 2.92 inches.

Standardized scores (Z) can be used to compare measurements relative to their populations which may have different means and standard deviations. In this question, the man with the greater Z score would be tallest relative to the country that he is from.

A man from the United States who is 5 feet 11.1 inches tall has a standardized score of for his height.

A man from Cambodia who is 5 feet 9.3 inches tall has a standardized score of for his height.