You have 3 jars containing the following marbles: Jar 1: 250 red and 750 white J

Question

You have 3 jars containing the following marbles: Jar 1: 250 red and 750 white Jar 2: 1 blue and 9 white Jar 3: 40 green and 60 white a) If you select 1 marble (without looking) from each jar,what is the probability of choosing 3 white marbles? b) If you select 1 marble (without looking) from each jar,what is the probability of choosing at least 1 white marble? You have 3 jars containing the following marbles: Jar 1: 250 red and 750 white Jar 2: 1 blue and 9 white Jar 3: 40 green and 60 white a) If you select 1 marble (without looking) from each jar,what is the probability of choosing 3 white marbles? b) If you select 1 marble (without looking) from each jar,what is the probability of choosing at least 1 white marble?

Explanation / Answer

You have 3 jars containing the following marbles: Jar 1: 250 red and 750 white = 1000marbles
Jar 2: 1 blue and 9 white = 10 marbles
Jar 3: 40 green and 60 white = 100 marbles

a) If you select 1 marble (without looking) from each jar,what is the probability of choosing 3 white marbles?

it means choosing white in each jar = 750/1000*9/10*60/100=.405 =40.5%

b) If you select 1 marble (without looking) from each jar,what is the probability of choosing at least 1 white marble?

1-prob of not choosing a single white =1-(250/1000*1/10*40/100)=1-.01=.99=99.0%

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