Mathematics
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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.
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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
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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?
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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
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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
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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?
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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
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OpenStudy (amistre64):
yes, 60 is what i would expect ;)
OpenStudy (anonymous):
yes 60 :)
OpenStudy (anonymous):
Thank you :D
OpenStudy (anonymous):
no prob