Find P (H and F) when a book is randomly selected

Question

Using the table

 

                                      Fiction (F)      Nonfiction (N)

 

             Hardcover (H)         87                    31

             Paperwork (P)         69                    54

 

Find P (H and F) when a book is randomly selected. ( round to 3 decimal places if needed)

 

a. 0.490

b. 0.647

c. 0.245

d. none of the above

Answer 1

The total number of books is the sum of four entries in the table.

 

87 + 31 + 69 + 54 = 241

 

Of these, the table shows that there are 87 hard-cover fiction books.

 

Since we are assuming all 241 books are equally likely, the probability of choosing a hard-cover fiction book is:

 

87/241 ≈ 0.361

 

This means it is (d).