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1Dfanatic
 one year ago
You have a bag containing three red, seven green, and six blue pens. You choose tow pens at random. Find P(blue and blue) with replacing.
Make sure to show/explain your work.
1Dfanatic
 one year ago
You have a bag containing three red, seven green, and six blue pens. You choose tow pens at random. Find P(blue and blue) with replacing. Make sure to show/explain your work.

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so let's see there are 16 pens.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Choosing blue is 3/8 chance

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0multiply to find chance

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1first find probability of drawing a blue on a single draw. since the 2 draws are independent the above probability is multiplied by itself to give the answer you want.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0The probability of picking two blue pens is approx 12.5%

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1No the probabiluty of a second blue is also 3/8 because the ball is replaced.

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1so P(blue and blue) = 3/8 * 3/8

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1you understand why 1 draw = 3/8? 6 out of 16 = 3/8

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1dahmanman would have been right if the ball was not replaced

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1 because there would have been 5 blues out of a total of 15 balls, which = 1/3
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