Step-by-step explanation:

Therefore, 32/243 is the answer.
Answer:
both decrease
Step-by-step explanation:
mean before the 4th kitten = 153
mean after the 4th kitten = 129
<em>hence mean decreases</em>
median before the 4th kitten= 153
median after the 4th kitten= 150
<em>hence median decreases</em>
2/4 or 1/2 (simplified) is your answer