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 a total of 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, Tom's conclusion is not valid. Using only the students from the band classes as a representative sample may not accurately represent the entire student population in the school. Students who are not in band classes may play different numbers of musical instruments, so his conclusion that the average number of musical instruments students in his school play is three may not be accurate. A more representative sample of the entire student population would need to be used to make a valid conclusion.
