Question

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

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

@cwrw238 @beccaboo333

Answer 2

I'm not very good with math.. sorry :/

Answer 3

@hartnn @nincompoop @iambatman @iPwnBunnies

Answer 4

PROBABILITY

@KendrickLamar2014 Hai Sweet Friend, WeLcoMe to OpeN stuDy.. !!

HMM... DO U NEED HELP WITH UR SOLVED SOLUTION OR LIKE TO KNOW HOW TO SOLVE IT.. !

Answer 5

Like to know how to solve it

Answer 6

Alright... just a min..

Answer 7

Fine... i think u might know the basics...then together we can sort it out...

Can you tell me the probability of selecting a red / how many reds are in the jar?

Answer 8

4/16

Answer 9

@KendrickLamar2014 good, now can you tell me the probability of selecting a blue ? (after putting the red back in)

Answer 10

7/16

Answer 11

Exactly, The probability of selecting a red and then a blue is P(r) x P(b)

ref formula (Pic)

Answer 12

it might be easier to simply the first fraction before cross multiplying ... how much u get ?

4/16 * 7/16 =?

Answer 13

Hope u understands.. !

Answer 14

7/64

Answer 15

@KendrickLamar2014 Are u there ?

Answer 16

yes

Answer 17

hey... wonders u got 7/64?

Answer 18

**seems boring I guess, btw, we are still in the middle of water, didn't reach the Boat, but u can see it ...LOL**

Answer 19

yes

Answer 20

Congrats...so that is part a) done .

Answer 21

yes

Answer 22

Well, for part B ( figure),

** I use paint bcuz i don't know how to write it using OS tools..

Answer 23

I got it now: http://openstudy.com/study#/updates/5164201ae4b057e06e8807c6

Answer 24

from OS...alright..carry on... !

Wondering If you are satisfied with this answer, Please close this Question.

Thank You ! Keep in touch with Open Study.. Bye !

Answer 25

Thanks for saving some time... :)

Answer 26

No problem