Question

a survey explored the relationship between gender and band class. which is a reasonable conclusion?
boys girls total
in band 4 8 12
not in band 9 5 14
total 13 13 26
a there are more band members than non - band members
b there are more boys in band than not in band
c there are more boys in the class than girls
d more than half of the band members in the class are girls

Explanation:

• For option A: Band members total 12, non - band members total 14. So 12 < 14, A is wrong.
• For option B: Boys in band are 4, boys not in band are 9. 4 < 9, B is wrong.
• For option C: Total boys are 13, total girls are 13. 13 = 13, C is wrong.
• For option D: Band members are 12, girls in band are 8. Half of 12 is 6, and 8>6, so more than half of band members are girls. D is correct.

Answer:

D. More than half of the band members in the class are girls