Michael has a box of colored balls. It contains four red balls, two green balls, and five blue balls. Michael draws a ball at random from the box

Let R denote the event that the ball he draws is red, and let B denote the event that the ball he draws is blue.

What is Pr (R|B) ?

What is Pr (R|B′) ?

Enter your answers as whole numbers or fractions in lowest terms.

Question

Mathematics

Kirby

25 February, 21:54

Michael has a box of colored balls. It contains four red balls, two green balls, and five blue balls. Michael draws a ball at random from the box

Let R denote the event that the ball he draws is red, and let B denote the event that the ball he draws is blue.

What is Pr (R|B) ?

What is Pr (R|B′) ?

Enter your answers as whole numbers or fractions in lowest terms.

+1

Answers (2)

Know the Answer?

Krista Eaton · Answer 1

First count all the balls. 11 balls. That will be your denominator.

His chances of drawing a red ball is 4/11

His chances of drawing a blue ball is 5/11

Gia · Answer 2

The total number of balls is 11. There are four red balls out of the 11 balls, so the probability of red balls is 4/11. There are five blue balls out of 11, so he probability of blue ball is 5/11.