Tom collected an informal gender based data sample at his university. He observed people who walked by cafeteria over a period of several days, and recorded their gender. (Assume that he observed each individual person no more than once during his observations). What test should Tom run to determine if his observations significantly differed from the student population? A chi-squared test of independence between genders A mean comparison of counts across genders to see if they differ by 5% or more A binomial test of observed genders against an expected baseline A raw comparison of gender-based outcomes against a coin toss experiment to see if they differ by 5% or more.