Question

An arts and craftsupply store has a large crate thatcontains brass copper, and silver beads Several friends take tumspushing their hands into the beads grabbing one, recording the bead tpe.and placing the bead back into the crate. They then repeat the processThe table shows the count for each bead type Write a probab ty model forchoosing a bead.

Answer 1

Notice that the blank space asks for the probability of picking a brass bead, P(brass).

To find it, divide the number of times that a brass bead was chosen over the total amount of times that a bead was chosen.

Add the numbers from the table to find the total amount of times that the group of friends grabbed a bead:

$72+48+180=300$

Since a brass bead was chosen 72 times, the probablity of chosing a brass bead is:

$\frac{72}{300}$

Simplify the fraction by dividing the numerator and the denominator by the GCF of 72 and 300, which is 12:

$\frac{72}{300}=\frac{72\div12}{300\div12}=\frac{6}{25}$

Therefore, the probability of choosing a brass bead, is 6/25.