Question

The school librarian recorded the types of books students checked out on a typical day. Suppose there are 605 students enrolled at the school. Predict the number that perfered humor books. Compare this to the number of students at the school who perfer nonfiction.
Graph shows:
humor- 13 out of 25
nonfiction- 8 out of 25
mystery- 15 out of 25
romance- 6 out of 25
adventure- 13 out of 25

Answer 1

Answer with explanation:

The entry in the graph are :

humor-    13 out of 25

nonfiction-   8 out of 25

mystery-   15 out of 25

romance-   6 out of 25

adventure-  13 out of 25

i.e. the probability of choosing humor books= 13/25

and the probability of choosing non-fiction= 8/25

Now there are a total of 605 students enrolled at the school.

• Hence, the number of students preferring humor books is:

$\dfrac{13}{25}\times 605\\\\=314.6$

which is approximately equal to 315 students

• and the  number of students preferring non-fiction is:

$\dfrac{8}{25}\times 605\\\\=193.6$

which is approximately equal to 194 students

Answer 2

Humor - .52 

nonfiction - .32 

.2 more prefer humor over nonfiction