Question

***PS: I can't put the diagram so I type it.***

The diagram below shows the contents of a jar from which you select marbles at random.

Inside the jar there is 16 marbles.
Inside the jar there is 4 red marbles. 7 blue marbles. 5 green marbles.

a. What is the probability of selecting a red marble, replacing it, and then selecting a blue marble? Show your work.

b. What is the probability of selecting a red marble, setting it aside, and then selecting a blue marble? Show your work.

c. Are the answers to parts (a) and (b) the same? Why or why not?

Answer 1

(a) 4/16 * 7/16
(b) 4/16 * 7/15

(b) is different because there are fewer marbles to choose from on the second draw.

Answer 2

(a) 4/16 * 7/16
(b) 4/16 * 7/15

I need to find the answer?

Answer 3

yeah - you have trouble multiplying fractions?

Answer 4

Just multiply.

Answer 5

(a) 4/16 * 7/16 = 0.109375
(b) 4/16 * 7/15 = 0.11666666666

Answer 6

is it correct?

Answer 7

your chances of getting a red is 4 of 16 and for blue is 7 of 16, but the second question changes you still have 4 of 16 chances of getting red, but setting it aside, means you only have 7 out of 15 chances. good luck

Answer 8

Steve, Anonymous

Answer 9

why bother with all those decimals?
4/16 * 7/16 = 7/64
4/16 * 7/15 = 7/60
The fractions are exact; the decimals are usually only approximate.

Answer 10

Anyone able to explain c?

Answer 11

Question C is basically asking if both answers to questions a and b are different. So it really isn't that hard to figure out. :/

Answer 12

Do You Know Da Wae

Answer 13

That is a dead meme and just multiply 4/16 by 7/16 and question C is pretty self explanatory once you have your answer

Answer 14

i may be ded but i live on in detriot foxtrot