contestada

Diane also has several nonfiction books. Of those books, 28% are hardcover, 22% are reference books and 13% are hardcover reference books. Diane will select a nonfiction book at random. Let the event that the selected book is a hardcover by H and the event that it is a reference book be R. Suppose that a book is chosen at random. What is the probability that it is a hardcover or a reference book?

Respuesta :

The probability that it is a hardcover or a reference book  will be 0.37. in other words, the probability is the number that shows the happening of the event.

What is probability?

It is defined as the ratio of the number of favorable outcomes to the total number of outcomes,

Event H; Selected base is hardcover

R;Selected book is a reference book

[tex]\rm P(H)= 0.28 \\\\ P(R)=0.22 \\\\[/tex]

P(H∩R)=0.13

The probability that it is a hardcover or a reference book;

P(H∪R)=P(H)+P(R)-P(H∩R)

P(H∪R)=0.28+0.22-0.13

P(H∪R)=0.37

Hence, the probability that it is a hardcover or a reference book will be 0.37.

Learn more about the probability here:

brainly.com/question/11234923

#SPJ1

Otras preguntas