2 answers:
Answer: 33.3%
Step-by-step explanation:
From the given table, the number of books which is a nonfiction paperback =23
The total number of books = 69
Then the probability that a randomly selected book is a nonfiction paperback is given by :-

In percent, 
Hence, the probability that a randomly selected book is a nonfiction paperback is 33.3%
We have given the 2 by 2 frequency table.
The probability that a randomly selected book is a nonfiction paperback =
(Number of nonfiction paperback books) / Total number of books
= 23 / 69
= 0.3333
The percentage of nonfiction paperback books is 33.33%
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