Ask your own question, for FREE!
Mathematics 12 Online
OpenStudy (anonymous):

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?

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

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

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) = ?

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

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?

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

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) = ?

OpenStudy (anonymous):

.176

Vocaloid (vocaloid):

great! that's it

OpenStudy (anonymous):

i would convert to fraction

Vocaloid (vocaloid):

176/1000

OpenStudy (anonymous):

thanks

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!