Tom wants to know the average number of musical instruments students in his school play. He used the school's two band classes, consisting of the total of 48 students, as is representative sample. He concluded that students in his school play in an average of three musical instruments. Is his conclusion valid? Yes because all members of the sample play at least one musical instrument? Yes because the sample includes both male and females who play musical instruments? No because his representative sample is too large? Or no because he did not choose the student's randomly?
