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Mathematics 9 Online
OpenStudy (anonymous):

Identify the resulting probability as theoretical or experimental. The outcomes for rolling a number cube with faces labeled 1− 6 are equally likely. Find the probability that the number rolled is at least a 4. A. The experimental probability is . 1/2 B. The experimental probability is . 1/3 C. The theoretical probability is . 1/2 D. The theoretical probability is . 1/3

OpenStudy (anonymous):

@knaim @ganeshie8

ganeshie8 (ganeshie8):

we're not doing any experiments here so the probability wud be theoretical

OpenStudy (anonymous):

ok

ganeshie8 (ganeshie8):

how many numbers are atleast a 4 ?

OpenStudy (anonymous):

1?

ganeshie8 (ganeshie8):

nope, what are all the outcomes when u roll a die ?

ganeshie8 (ganeshie8):

total outcomes : 1, 2, 3, 4, 5 ,6

ganeshie8 (ganeshie8):

How man numbers in the above list are atleast 4 ?

OpenStudy (anonymous):

3!

ganeshie8 (ganeshie8):

Yes ! so the probability for getting a number which is atleast 4 is ?

OpenStudy (anonymous):

D?

ganeshie8 (ganeshie8):

probability = (number of favorable outcomes) / (total number of outcomes)

ganeshie8 (ganeshie8):

= 3/6 = ?

OpenStudy (anonymous):

1/2 so c?

ganeshie8 (ganeshie8):

Yes !

OpenStudy (anonymous):

Thx!

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