Question

The table shows the result of rolling a number cube several times.
To the nearest percent, what is the experimental probability of rolling a 3 or a 6?

A.
12%







B.
30%







C.
33%







D.
40%

Answer 1

First, you find the total number of rolls/tries. Which is adding all of the numbers in the outcome. Then you find the probability of each number, 3 and 6. Like last problem, the probability is the number of tries/rolls over the total number of tries/rolls.

Answer 2

Then you add both probabilities together to get the answer.

Answer 3

Total number of rolls/tries is 21. Then 31 is the number of times outcome occurs

Answer 4

Remember, the total number of rolls/tries is the outcome added together. So it'll be 5+4+7+5+4+5

Answer 5

I see the confusion. My mistake. I'm referring to the number of tries.

Answer 6

so 1+2+3+4+5 ?

Answer 7

No, 5+4+7+5+4+5. That's the total amount of tries/rolls. Which is 30.

Answer 8

With that, you find the probability of getting number 3 and the probability of getting number 6.

Answer 9

30%?

Answer 10

or does 30 have nothing to do with the final answer?

Answer 11

@Dscdago

Answer 12

30 is the total amount. To find the probability of something, it's the number of times the outcome occurred/total amount. So for number 3, it'll be 7/30. Can you find the probability of number 6?

Answer 13

5/30

Answer 14

Yes. Now add the probability of 3 and 6. (7/30)+(5/30)

Answer 15

12/30. so would it be 12%?

Answer 16

Since decimals can be converted to percent, you can divide 12 by 30. 12/30

Answer 17

12 divided by 30 is 26

Answer 18

Hehe. Actually, 12 divided by 30 is .4

Answer 19

Convert .4 to a percent. Do you know how?

Answer 20

omg, sorry. I'm an idiot. & no, I don't

Answer 21

It's fine. To convert a decimal to percent, you move the decimal point two places to the right. Remember that in .4, after the 4 there are 0's, but they are not written.

Answer 22

If you want to convert from percent to decimal, is the same process, but instead of moving the decimal point to the right, you move it to the left.

Answer 23

40%?

Answer 24

That's it!

Answer 25

thank you so much

Answer 26

I'm glad I could help.