Question

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.

Answer 1

so let's see there are 16 pens.

Answer 2

Choosing blue is 3/8 chance

Answer 3

second time is 1/3

Answer 4

multiply to find chance

Answer 5

first 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.

Answer 6

The probability of picking two blue pens is approx 12.5%

Answer 7

i got 1/3

Answer 8

No the probabiluty of a second blue is also 3/8 because the ball is replaced.

Answer 9

so P(blue and blue) = 3/8 * 3/8

Answer 10

then it'd be 9/64

Answer 11

yes

Answer 12

thank you

Answer 13

you understand why 1 draw = 3/8?

6 out of 16 = 3/8

Answer 14

yw

Answer 15

dahmanman would have been right if the ball was not replaced

Answer 16

- because there would have been 5 blues out of a total of 15 balls, which = 1/3