The samples he chose may not be a representative sample because the number of students per foreign language class may not be the same. One class may have a very large number of students while another may have only a few. Taking equal number of students per class is not a representative sample.<span />
Answer:
See pic below.
Step-by-step explanation:
Answer:
-2
Step-by-step explanation:
-4 - 1 + 3
-2
Answer:
240 pencils
Step-by-step explanation:
10 (24) = 240