Question

Probability how would you do these problems?

A bag contains 3 yellow, 4 blue, 2 red, and 3 orange marbles. You reach in the bag and pick out one marble. What is the probability that you selected an orange marble.
An experiment consists of spinning a spinner with eight equal sections numbered 1-8. Find the theoretical probability of spinning a number greater than 6.

Answer 1

1st one:
you have 3+4+2+3 = 12 marbles in total
There are 3 orange marbles
The probability is:
\[ \frac{\text{# of ways to get an orange marble}}{\text{total number of marbles}}\]

2nd one:
There two ways to get a number greater than 6: namely 7 and 8
The probability is then:
\[ \frac{\text{# of ways to get an a number > 6}}{\text{total number of sections}}\]

Answer 2

4/12 for 1 but that's not an option for answers

Answer 3

there are only 3 orange marbles, not 4 :)

Answer 4

yeah but im suppose to do 3 divided by 12 correct? the option for answers are

a. 1/4
b. 1/12
c. 1/3
d. 1/6

Answer 5

3/12 ... you can simplify the fraction by dividing the top and bottom by 3

Answer 6

so 1/4?

Answer 7

indeed!

Answer 8

and the second one would be 3/8?

Answer 9

no1/4

Answer 10

yup 1/4