Kane used a probability simulator to roll a 6-sided number cube and flip a coin 100 times. The results are shown in the tables below:
Using Kane's simulation, what is the probability of rolling a 2 on the number cube and the coin landing heads up?
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OpenStudy (anonymous):
OpenStudy (anonymous):
I though i would subtract 2 from the total but guess not how it is .
OpenStudy (anonymous):
would be 87/100
Vocaloid (vocaloid):
take a look at the table
what is the probability of rolling a 2?
OpenStudy (anonymous):
32
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Vocaloid (vocaloid):
not quite, remember that probability of rolling a 2 = (number of 2's/total number of rolls)
Vocaloid (vocaloid):
your answers should be a fraction
OpenStudy (anonymous):
32/6
Vocaloid (vocaloid):
how many times was the die rolled?
OpenStudy (anonymous):
5 1/3 or 5.33
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Vocaloid (vocaloid):
I'll ask again, how many times was the number cube rolled?
OpenStudy (anonymous):
6
Vocaloid (vocaloid):
please read the problem again
how many times was the number cube rolled?
OpenStudy (anonymous):
100
Vocaloid (vocaloid):
right
so, the probability of rolling 2 = (number of 2's/total number of rolls) = ?
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OpenStudy (anonymous):
2/100?
Vocaloid (vocaloid):
how many times did 2 get rolled?
OpenStudy (anonymous):
50
Vocaloid (vocaloid):
please read the table again
how many times did 2 get rolled?
OpenStudy (anonymous):
32
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Vocaloid (vocaloid):
right, so probability of rolling 2 = (number of 2 rolled/total number of rolls) = ?
OpenStudy (anonymous):
2/32
Vocaloid (vocaloid):
not quite, let's try again...
how many times did 2 get rolled?
OpenStudy (anonymous):
32
Vocaloid (vocaloid):
right, and how many total rolls were there?
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OpenStudy (anonymous):
100
OpenStudy (anonymous):
32/100
Vocaloid (vocaloid):
yes! now let's move on to the next step of the problem
Vocaloid (vocaloid):
now, we need to find the probability of the coin landing heads up
probability of heads = (number of heads/total number of coin flips) = ?
OpenStudy (anonymous):
55/6
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Vocaloid (vocaloid):
how many times was the coin flipped?
OpenStudy (anonymous):
100
Vocaloid (vocaloid):
right, so...
probability of heads = (number of heads/total number of coin flips) = ?
OpenStudy (anonymous):
55/100
Vocaloid (vocaloid):
right, now we multiply the two probabilities together
(32/100)*(55/100) = ?
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