Yeah, I believe you are correct!
I say subcategory would be a good answer
Answer:

Step-by-step explanation:
Given

Required
Determine the probability of selling exactly 1 batch
This probability is represented with 
From the table:
When x = 1; P(x) = 0.10
Hence:

<em>In other words, the probability of selling exactly 1 is 0.10</em>
7 x 2/15
7 x 2 = 14
14/15 is your answer
hope this helps