1. Researchers claim that 75% of the world's people have brown eyes, 8% have blue eyes, 8% have hazel eyes, 2% have green eyes, and the remaining 7% have other colors. To determine whether this is a true proportion, a random sample of people are asked their eye color. Their responses are shown in the table.

Eye Color: Brown Blue Hazel Green Other

Count: 475 55 40 15 15

Which of the following represents the chi-square statistic?