Tom wa to to know the average number of musical instruments students in his school play. He used the school two band classes, consisting of a total po f 48 students, as his representative sample. He concluded that students in his school play an average of three musical instruments. Is his conclusion valid?
No, because his representative sample is too large
Yes,because sample includes both male and female who plays
Yes, because all members play atheist one musical instrument
No, because he did not choose students randomly