Ask your own question, for FREE!
Mathematics 23 Online
OpenStudy (anonymous):

Theoretical and Experimental Probability

OpenStudy (anonymous):

So I tossed 2 coins 100 times. Here is the info I have to fill out:

OpenStudy (anonymous):

OpenStudy (anonymous):

When I tossed it, I got 2 heads 28 times, 2 tails 31 times, and 1 head, 1 tail 41 times

OpenStudy (anonymous):

Can someone help??

OpenStudy (anonymous):

I'm not sure if I'm right so.... Please check EVERYTHING in the document :)

OpenStudy (anonymous):

@inowalst @iGreen @Data_LG2 @confluxepic @freckles @fryfry2003 @Holly00d1248 @IrishBoy123

Directrix (directrix):

I think you have theoretical mixed up with experimental.

OpenStudy (anonymous):

Ok so which one am I wrong in?

OpenStudy (anonymous):

Oh the theoretical is wrong right?

OpenStudy (anonymous):

Can you help me with this document please?

Directrix (directrix):

Look at what you wrote for #1

OpenStudy (anonymous):

Wrong?

Directrix (directrix):

Theoretical for HH is 1/2 * 1/2 = 1/4

OpenStudy (anonymous):

Oh so there ALL wrong

Directrix (directrix):

#1 Is Wrong? Wrong.

OpenStudy (anonymous):

Haha ok

Directrix (directrix):

I have looked only at #1.

OpenStudy (anonymous):

So then give me an example, what would I put for #1?

Directrix (directrix):

#2 is okay. It is the experimental probability question.

OpenStudy (anonymous):

Ok, so all the experimental are right but the theoretical ones are wrong?

Directrix (directrix):

I am not saying that. I think you should begin anew on this.

OpenStudy (anonymous):

Ok. So then which ones are wrong?? Please tell me

OpenStudy (anonymous):

@Directrix please just tell me which ones are wrong!!!

Directrix (directrix):

Suggestion: put the frequencies in the proper column

OpenStudy (anonymous):

Ok and how would I do that?

OpenStudy (anonymous):

Please, that's the part I get the most confused! lol

Directrix (directrix):

Shift the numbers over. Look at the attachment you posted.

OpenStudy (anonymous):

All I have to do is put the exact same numbers over to the other column?

Directrix (directrix):

Just move them over.

OpenStudy (anonymous):

oh ok thx:)

OpenStudy (anonymous):

@jagr2713 can you help me with the rest of this document?

Directrix (directrix):

For #1, you can use most of what is written: Since theoretical probability is the number of favorable outcomes / the number of possible, then the theoretical probability that a coin toss results in two heads showing is 1/2 * 1/2 = 1/4,

OpenStudy (anonymous):

ok so then I basically do the same for the other theoretical probability?

Directrix (directrix):

#2 is correct as written #3 you know the theoretical probability of HH from #1

OpenStudy (anonymous):

ok so then i just do that for the theoretical probability and for experimental too?

OpenStudy (anonymous):

like do what i was doing for experimental

OpenStudy (anonymous):

and do what you just told me for theoretical?

Directrix (directrix):

3)What is the theoretical probability that a coin toss results in two tails showing? The two tails and the two head rationales are the same. The theoretical probability of TT is 1/2 * 1/2 = 1/4.

Directrix (directrix):

Your experiemental 2 tails is okay:  What is the experimental probability that a coin toss results in two tails showing? Since experimental probability is the number of times an outcome occurs / the total number the experiment is completed, the experimental probability that a coin toss resuls in two heads showing is 31/100.

OpenStudy (anonymous):

ok, so i do that for theoretical questions

OpenStudy (anonymous):

and so i just do what i was doing for experimental?

OpenStudy (anonymous):

thx:) ur awesome lol

Directrix (directrix):

What is the theoretical probability that a coin toss results in one head and one tail showing? P( HT or TH) = P(HT) + P(TH) = 1/2 *1/2 + 1/2 * 1/2 = 1/4 + 1/4 = 2/4 = 1/2. Theoretical probability of 1 H, 1T is 1/2.

OpenStudy (anonymous):

1/2 of what?

OpenStudy (anonymous):

oh of 41?

OpenStudy (anonymous):

am i right?

OpenStudy (anonymous):

@Directrix ?

Directrix (directrix):

#6 looks okay What is the experimental probability that a coin toss results in one head and one tail showing? Since experimental probability is the number of times an outcome occurs / the total number the experiment is completed, the experimental probability that a coin toss resuls in two heads showing is 41/100.

OpenStudy (anonymous):

ok

OpenStudy (anonymous):

but am i right of 1/2 of 41?

Directrix (directrix):

I don't know what you are talking about with 1/2 of 41. Why are you doing that?

OpenStudy (anonymous):

oh oops lol :P

OpenStudy (anonymous):

oh and what am i supposed to do for the last question?

Directrix (directrix):

#6 is not okay after all What is the experimental probability that a coin toss results in one head and one tail showing? Since experimental probability is the number of times an outcome occurs / the total number the experiment is completed, the experimental probability that a coin toss resuls in two heads showing is 41/100. The first sentence is about one head and one tail. The summary sentence is about two heads. Too much copying and pasting so fix that.

OpenStudy (anonymous):

? i dont get it

OpenStudy (anonymous):

oh oh oh ok i found it

OpenStudy (anonymous):

i will :)

OpenStudy (anonymous):

what about #7?

Directrix (directrix):

probability that a coin toss resuls in** two heads*** showing is 41/100. This should be one head and one tail

OpenStudy (anonymous):

ok

Directrix (directrix):

So, how would you compare the theoretical probability to the experimental probabilities you got? #7Compare the theoretical probabilities to your experimental probabilities. Why might there be a difference?

OpenStudy (anonymous):

im not sure how to compare it

Directrix (directrix):

I would make a chart. Then, mention which experiemental result was closest to the experiemental one. |dw:1425503610994:dw|

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!