Question

#2: Jerome has a jar of marbles. He removed one marble at random recorded the color and then placed it back in the jar. He repeated this several times. The results are recorded in the table. Find the experimental probability of drawing a blue marble? *

Answer 1

ANSWER

9/25

EXPLANATION

The experimental probability is:

$P(event)=\frac{\text{ number of times the even occurs}}{\text{ total number of trials}}$

The total number of trials for this experiment is the sum of the frequencies of the table:

$19+13+18=50$

The number of times Jerome got a blue marble is 18.

Let 'B' be the event where Jerome draw a blue marble out of the jar:

$P(B)=\frac{18}{50}$

We can simplify this fraction, so the experimental probability of drawing a blue marble is:

$P(B)=\frac{9}{25}$