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Probabilistic Reasoning Videos 13 videos
Hakim rolled a standard 6-sided die 3000 times. Which of the following is the most reasonable prediction of how many times he rolled a five?
Mercedes has a trick coin that's more likely to land on heads than on tails. She flipped the coin 1500 times, resulting in tails 450 times. What is...
A standard deck of playing cards contains 4 different suits, each of which has 13 cards. Assuming the deck is shuffled, what is the probability of...
TSI Math: How Many Times Will Jaqen Roll Two 10s? 38 Views
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Description:
Jaqen has two 10-sided dice. He rolls both at the same time. What is the probability that both faces add up to a number less than 20?
- Data Analysis, Statistics, and Probability / Probabilistic Reasoning
- Data Analysis, Statistics, and Probability / Probabilistic Reasoning
- TSI Math / Data Analysis, Statistics, and Probability
- Test Prep / TSI
- TSI Mathematics / Data Analysis, Statistics, and Probability
- TSI / TSI Math
- TSI / TSI Mathematics
- Test Prep / TSI
Transcript
- 00:01
Okay sy mash members Jaqen has to ten sided tice
- 00:06
He rolls both at the same time what's the probability
- 00:09
that both faces add up to a number less than
- 00:12
twenty There's only one way to roll us some greater
- 00:20
than or equal to twenty rolling two tens Any other
Full Transcript
- 00:24
combination of faces adds up to a number less than
- 00:27
twenty much faster to find the probability of rolling two
- 00:29
tens and find the probability of all the other possible
- 00:32
roles so just take the shortcut there Well the probability
- 00:34
of rolling ten on one dies one in ten because
- 00:37
each of the ten faces has an equal probability of
- 00:40
turning up The probability of rolling to tens then is
- 00:43
one over ten times one over ten or one over
- 00:47
one hundred or one percent The probability of rolling anything
- 00:50
other than two tens and a rowing to faces that
- 00:53
add up to a number less than twenty is one
- 00:55
minus the probability of that one hundred shot So it's
- 00:59
ninety nine out of one hundred probability that both faces
- 01:02
add up to a number less than twenty is ninety
- 01:05
nine out of one hundred And yeah we like those
- 01:07
odds So the answer is c and we're so shmoop
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