Question

I'm in Algebra 2 and I need help with studying for a test tomorrow on word problems of independent and dependent events. I don't understand how to do questions on this because I just started school and got the worst teacher. I would really appreciate it if someone could break it down easily for me

Answer 1

Do you mean independent and dependent events for probability?

Answer 2

yes

Answer 3

Do you know the functions for independent and dependent events?

Answer 4

what do you mean by functions?

Answer 5

the P= A | B thing

Answer 6

Are you learning this, independent events are P(A) times P(B given A) for a 'and' situation and an 'or' situation is P(A)+P(B)-P(A and B given A) and then dependent...

Answer 7

the first half I've seen but the last half of that message I've never seen before

Answer 8

Do have any problems, so I can see what your teacher is testing you on?

Answer 9

the first half I mean is the P(A) time P(B)

Answer 10

Ok so I just started school last week and I have a teacher that doesn't teach at all, he puts videos of other teachers up and if he does "teach" us it's just examples and he does them there is no note taking and that's mainly how I learn so I have no problems really :(

Answer 11

It's okay, I totally understand, one of my teachers is like that. Do you want me to give you a problem and see if you are suppose to know this?

Answer 12

sure :)

Answer 13

I need literally all the help I can get

Answer 14

are you guys learning sample space, events, outcomes, that stuff?

Answer 15

I've heard of sample space

Answer 16

ok that means i'm going on the right track

Answer 17

do you know a tree diagram?

Answer 18

no

Answer 19

wait yes

Answer 20

is it like combinations?

Answer 21

we had a quiz last week on combinations and permutations but I failed it because the day he taught us the lesson he used the wrong formula and the quiz day he changed it and didn't tell us how to actually do it

Answer 22

Oh ok that is a totally dif thing. I have a test on it on friday, but i will help you with what i know

Answer 23

Oh I'm sorry >.<

Answer 24

Do you know factorials, will it be on your test, Np

Answer 25

No

Answer 26

oh I found factorial in my notes XD

Answer 27

Ok, permutations are used when you ARRANGE something. You need the ORDER of things to matter. For ex, ABC is different than BCA. Combination is when you DONT care about the order. Everything is 'grouped' For ex, ABC is same as BCA and CBA etc. A combination is ABC is one 'group' and DEF is a dif group

Answer 28

I know that

Answer 29

ok, then here's a word problem.
12 students are competing in the finals of a spelling bee. The top 3 finishes are awarded with a gold, silver, and bronze medal. In how many ways can the medals be won?
tell me if it's a permutation or combination, then solve.

Answer 30

my teacher gave us this example before XD

Answer 31

Oh ok, are you in Integrated or Algebra 2

Answer 32

well not really give but he did it

Answer 33

what's integrated? I'm in Algebra 2 class

Answer 34

it's permutation btw cx

Answer 35

A summer camp offers 12 dif afternoon activities. Caleb selects 2 of the activities to do today. How many possible outcomes are there if the order of the activities is important?
Good job!

Answer 36

permutation butttt I need to know independent and independent for tomorrow >.<

Answer 37

is it this thing then 8C8(0.8)^4 * (.2)^4 its ind ind for combination,

Answer 38

whoa what is that?

Answer 39

So your teacher doesn't give you any problems to do? Because I'm confused with what your teacher is teaching you, it sounds like for me two chapters combined into one. ours was ind or dep events, next chapter permutation and combination

Answer 40

ya he never gives us notes.. never gives us stuff to do on our own.. nothing :/

Answer 41

is it dep and ind for permutation and combination or is the quiz figure out dep and ind events

Answer 42

I've tried changing my teacher and the school won't let me ;-; I can't learn with a teacher like this, I have to try teaching myself and have every bit of help from random people.. I really like math once I have a good understanding of what I'm learning about

Answer 43

My quiz tomorrow is for independent and independent events
I already did the permutations and combinations one last week

Answer 44

I feel so bad for you. I want to help you because that's how it is for me in science. I had to research all the questions for the test.

Answer 45

Awh I'm sorry :(

Answer 46

Here is a problem
You spin each spinner in the diagram one time. What is the probability that the 1st two spinners land on 1?

Answer 47

The spinners each have 4 sections labeled 1-4

Answer 48

let me know if this helps @soopphhiiaaaa

http://www.regentsprep.org/regents/math/algebra/apr6/lindep.htm

Answer 49

1/4 times 1/4?

Answer 50

YES!!!!

Answer 51

@jim_thompson5910 I've looked at that website already but thank you anyway for the help, I don't understand how they answer the questions :(

Answer 52

So you understand that it is an independent events

Answer 53

independent because it doesn't rely on other spins?

Answer 54

Try this one
A bag contains 8 red ribbons, 7 green ribbons, and 3 yellow ribbons. If you randomly remove 3 of the ribbons from the bag, what is the prbobability that the 1st two ribbons will be yellow

Answer 55

Yes the answer of the second one doesnt depend on the first one

Answer 56

hmm so dependent?

Answer 57

why would you say that? explain

Answer 58

because your removing 3 from the bag

Answer 59

im not saying ur right or wrong i want you to understand

Answer 60

yup

Answer 61

ok now solve

Answer 62

oh but idk how to find the probability

Answer 63

do you need to know? on quiz?

Answer 64

1/18? or 1/15

Answer 65

idk

Answer 66

yes!

Answer 67

sorry, ill walk you through it

Answer 68

it's ok

Answer 69

first how many yellow ribbons out of total ribbons

Answer 70

3/18

Answer 71

yes

Answer 72

how many ribbons are left when you take one out (total)

Answer 73

wait what

Answer 74

3/15

Answer 75

no ok you have 3 yellow then you pick one out how many do you have

Answer 76

2 :)

Answer 77

yup and after you take one ribbon out how many are left in the total ribbons

Answer 78

2/16

Answer 79

18 in all minus 1 is 2/17

Answer 80

oh oops

Answer 81

I forgot it was 18 in total XD

Answer 82

yup

Answer 83

so wat is the probability of picking one yellow then another yellow

Answer 84

2/17?

Answer 85

wait no.. 1/ something

Answer 86

wat u do is like ind events you multiple the first event by sencond event

Answer 87

really?

Answer 88

first event 3 yellows available out of 18 total you take out one yellow is 17 for ttotal and 2 yellow remaining so you multiple them and get 1/51

Answer 89

ohhhh

Answer 90

do you want to try one on ur own?

Answer 91

is that what A and P stand for, the 2 events?

Answer 92

yes please

Answer 93

wait so when you did 3/18 times 2/17 how do you multiply fractions

Answer 94

ok
A box contains dicscss with letters on them, as shown in the diagram. You randomly remove four discs one at a time and set them in a row on a table. What is the probability that the discs you remove will be A B C D?

C A B A
D C C A
A D A B
A B D D

Answer 95

sorry discs

Answer 96

I'm lost >.<
um.. 4/16

Answer 97

2/6?