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Copy of PROBABILITY
Transcript of Copy of PROBABILITY
black Outcomes: red
black there are 12 possible outcomes. Dependent Events: the outcome of one event that does affect the outcome of another. example: 4 blue, 6 red, and 5 yellow marbles are in a bag. A yellow marble is selected at random and not replaced. what is the probability of getting another yellow marble. total marbles: 15
total marbles without the first yellow marble drawn: 14
P(yellow marble) the first time: 5/15 = 1/3
P(second yellow marble) =4/14= 2/7
P(yellow,yellow)= 1/3 x 2/7= 2/21
Independent Events: Stands alone, the outcome of one event doesn't affect the outcome of the others example: First you flip a coin
and then you roll a dice. P(heads,even)=1/2x1/2=1/4
Spinner: what is the probability that
the spinner lands on a 3? 1/6 what is the probability that
the spinner lands on a 4? 2/6 or 1/3 what is the probability
that the spinner lands
on a primary color 3/4 what is the probability
of landing on red? 2/4 or 1/2 THANK YOU formula: