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. The sample size of 48 students from two band classes in his school may not be representative of the entire student population at his school. Additionally, the fact that the students are in band classes may also skew the average number of musical instruments played, as band students may be more likely to play multiple instruments compared to the general student population. It would be more accurate to survey a random sample of students from various grade levels and extracurricular activities to determine the average number of musical instruments students play in the school.
