nuccioreggie one year ago Help

1. nuccioreggie

Meg rolled a fair six-sided die 28 times. The table below shows the number of times each number was rolled: Number Cube Experiment Number on the Cube Number of Times Appeared 1 2 2 7 3 9 4 4 5 6 6 0 According to the results in the chart, what is the experimental probability of getting a number less than 3 on the die? 19 over 28 9 over 28 7 over 28 2 over 28

2. DanJS

experimental probability, what happened actually ?

3. DanJS

empirical

4. DanJS

(number of times event happened) / (total events)

5. nuccioreggie

You want me to show you a picture of the question or you get it already?

6. DanJS

how many times did he roll a number less than 3, a 2 or a 1 ?

7. nuccioreggie

Ummm hold on

8. DanJS

(number of times rolling a 2 or a 1) / ( total # of rolls)

9. nuccioreggie

So what do i do can you explain please

10. DanJS

add up the total times he actually rolled less than 3, and divide that by his total number of rolls

11. DanJS

(7 + 2) / 28

12. DanJS

That is the experimental/empirical/"real world" probability

13. nuccioreggie

I got 0.3214285714

14. DanJS

just simplify the fraction, 9 out of 28 rolls he hit a 1 or 2

15. DanJS

$\frac{ total ~ 1 ~or~2}{ total~rolls }=\frac{ 2+7 }{ 2+7+9+4+6+0 } = \frac{ 9 }{ 28 }$

16. nuccioreggie

So the answer is B

17. nuccioreggie

So the answer is B

18. DanJS

sorry, yes b