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Data Analysis, Statistics, and Probability Videos 36 videos

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TSI Math: Multiplying Probabilities 5 Views


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Description:

There are 100 tiles in a bag of Scrabble tiles. Four of them are S's. If Akshay draws one tile, looks at it, puts it back, and then draws one tile again, what is the probability that he will draw an S both times?


Transcript

00:03

Okay sy mash members last one Hold your breath and

00:08

now let it go There are hundred tiles in a

00:10

bag of scrabble Four of them are ss If action

00:13

draws one tile looks at it puts it back and

00:16

then draws one tile again what is the probability that

00:19

he will draw in s both times We love us

00:25

some scrabble here it's month Our preferred dictionary is a

00:27

little weird though it's got words like quickie bow and

00:30

park nerf and needless to say we kill it when

00:33

we play scrabble Well this bag has a hundred scrabble

00:35

tiles and only four of them are letter asked if

00:38

action is drawing a tile at random and replacing it

00:40

that means each time he reaches into the bag there

00:42

will be a hundred tiles with for s is In

00:45

other words the probability of drawing an ass will always

00:47

be for one hundred or one out of twenty five

00:50

or point oh four or about four percent each time

00:54

as long as he tosses the tile he took back

00:57

in before he draws again So to find the probability

01:00

of getting an ass followed by another asked multiply those

01:02

two probabilities together and you've got a point Oh four

01:05

times point oh for his point o o one six

01:07

So action has a point One six percent chance of

01:11

getting and ask followed by an s the better question

01:14

would be how likely are we to get a mad

01:16

followed by a brew If dr seuss says they're letters 00:01:20.348 --> [endTime] or words Well who are we to argue

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