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Mathematics 16 Online
OpenStudy (anonymous):

Probability help please? Will medal :3 If the die above is rolled 180 times, predict the number of times it would land on a multiple of 3.

OpenStudy (amistre64):

what information do we have for 'the die above'? is it fair or biased?

OpenStudy (anonymous):

amist can we talk?

OpenStudy (anonymous):

it's fair, just a reglar die

OpenStudy (amistre64):

you can message

OpenStudy (anonymous):

*regular

OpenStudy (anonymous):

ok

OpenStudy (amistre64):

how many multiples of 3 exist on the face of the die?

OpenStudy (anonymous):

2

OpenStudy (anonymous):

can i explain to you whats going on?

OpenStudy (amistre64):

and how many options total are available?

OpenStudy (amistre64):

you can message me instead of interrupting a post please.

OpenStudy (anonymous):

In 1 roll or all 180?

OpenStudy (amistre64):

well, in one roll what are the total number of outcomes?

OpenStudy (anonymous):

6

OpenStudy (amistre64):

then we would expect 2 out of 6 probabilty for a given roll, and we have 180 rolls to consider

OpenStudy (amistre64):

what is 2/6 of 180?

OpenStudy (anonymous):

ahhh, yes, so we use a variable?

OpenStudy (anonymous):

180/6*2

OpenStudy (anonymous):

amis you get me message

OpenStudy (amistre64):

if its a fair die, and a multiple of 3 is expected to come up 2/6 of the time ... then out of 180 rolls we would expect 2.6 of them to be favorable

OpenStudy (anonymous):

Okay

OpenStudy (amistre64):

not 2.6 ... 2/6 one third of them that is

OpenStudy (anonymous):

1/3 is it simplified, correct?

OpenStudy (anonymous):

well it is not biased simply because an ecuation can find you the awnser

OpenStudy (amistre64):

what is 1/3 of 180?

OpenStudy (amistre64):

yes, 1/3 is a simplification of 2/6 :)

OpenStudy (amistre64):

library is closing so i gotta get :/ good luck

OpenStudy (anonymous):

60?

OpenStudy (anonymous):

Okay, thank you so much!

OpenStudy (anonymous):

waiyt lemme do it

OpenStudy (amistre64):

yes, 60 is what i would expect ;)

OpenStudy (anonymous):

yes 60 :)

OpenStudy (anonymous):

Thank you :D

OpenStudy (anonymous):

no prob

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