Toms wants 2 know da average number of musical instruments students in his school play. He used da schools 2 band classes, consisting of a total of 48 students, as his representative sample. he concluded dat students in his school play an average of three musical instruments. Is his conclusion valid?

Question

A ) Yes, bc all members of da sample play @ least 1 musical instrument

B ) No, bc his representative sample is 2 large

C ) No, bc he did not choose students randomly

D ) Yes, bc da sample includes both males n females who play musical intruments

Answer 1

C) No, bc he did not choose students randomly.

Tom's conclusion is not valid because using only the students from two band classes may not represent the entire student population of the school, and if those classes have a specific demographic of students, it could skew the average number of instruments played, meaning it lacks randomness necessary for a valid representative sample.