Question

Could someone help me with questions 3 and 4 please!! I have done 1&2 already.!!!!!
P1.Using your own words, describe two events that are independent. Use math vocabulary that you have learned so far in this module to explain what it means when events are independent.
Part 2: Define an issue that is important to you (politics, medicine, social media, education, etc.), and think about some things you might want to know about this issue.
1.Briefly explain your issue and what you hope to learn or understand.
2.Pose a question for which a two-way table is appropriate. Be creative here!

Answer 1

3. Choose a row and column and compare P (A l B) with P (B l A) .Explain what each probability means in the context of the situation and data you collected.
4.Compare P (A (upside down 'U' B) with P (A U B), and explain what each probability means in the context of the situation and data you collected.

Answer 2

My work for 2.
A survey was giving to a school of 500 students. They were asked if they prefer homework or no homework.

100 boys want homework

150 girls want homework

150 boys do not want homework

100 girls do not want homework

500 student want to have and not have homework.




Boys Girls Total
Homework 100 150 250
No Homework 150 100 250
Total 200 200 500

Answer 3

Please help... @uri

Answer 4

@Nnesha

Answer 5

@UnknownRandom

Answer 6

@MeganLeex3

Answer 7

Is this FLVS?

Answer 8

yesss.......

Answer 9

what subject, i might still have work from it

Answer 10

algebra 2:assignment 09.04 module nine quiz

Answer 11

not really a quiz

Answer 12

hmm didnt take it, but try googling, sometimes you can find it, especially on open study! sorry I couldn't help :(

Answer 13

i have looked every where, but no luck... Thanks for all of your help though :)

Answer 14

@Nnesha any help?

Answer 15

awwwww....... okay... thanks :(

Answer 16

okay, thanks :)

Answer 17

@amistre64

Answer 18

@jojokiw3

Answer 19

@SamsungFanBoy

Answer 20

@TheSmartOne

Answer 21

what does it mean for 2 events to be independant?

Answer 22

i guess it mean something that has two different outputs? I'm guessing

Answer 23

i mean outcomes

Answer 24

that doesnt sound right to me, of course i got no good way to define it either.

independence means that:

if the ratio of A within event B, is the same as the ratio of A within the total events, then A and B are independant.

say AnB have 2 elements in common, and B has 5 elements total

2:5 is the ratio of A within B

say A has 6 elements in total compared to 15 total events.

6:15 is the ratio of A within the total event space.

2/5 = 6/15, therefore A is independant of B

Answer 25

okay... sooo could u help me with 3 and 4?

Answer 26

maybe, id have to read them first ....

Answer 27

sorry, yea i would guess so

Answer 28

3. Choose a row and column and compare P (A l B) with P (B l A).

Explain what each probability means in the context of the situation and data you collected.

pick a row and column, and define the ratio of one within the other


4.Compare P (A (upside down 'U' B) with P (A U B), and explain what each probability means in the context of the situation and data you collected.

Answer 29

upside down U is just n

Answer 30

compare P(AnB) with P(AuB)

Answer 31

col1 col2
Boys Girls | Total
------------
row1 Homework | 100 150 | 250
row2 No Homework | 150 100 | 250
-------------------------
Total 200 200 500

Answer 32

given homework (done?), what is the probability of picking a girl?

Answer 33

or rather: P(girl, given homework) , or P(g|h)

Answer 34

? I really do not understand this

Answer 35

given the set of homework, what is our total event space? what is total homework?

Answer 36

event of homework might be more verbally correct, what is the total event space of homework?

Answer 37

500?

Answer 38

no, 500 is total events altogether

homework is a subset of events, homework is a row, what is the total of that row?

Answer 39

250

Answer 40

col1 col2
Boys Girls | Total
------------
row1 Homework | 100 150 | 250 <---- total events of homework
row2 No Homework | 150 100 | 250
-------------------------
Total 200 200 500

yes, 250, now probability is the simple definition of:

#desired/#total

our total homework event is 250, how many of those are girls?

Answer 41

150

Answer 42

good, so the probability of picking a girl, given that we are only concerned with homework, is 150 out of 250

P(girl | homework) = 150/250

Answer 43

so 0.6

Answer 44

right, so this tells us that 60% of those who do homework are girls, make sense?

Answer 45

yes, so much!!!

Answer 46

now, what percent of girls, do homework? given our event space is now total girls, how many of them do homework?

how many girls are there in total? how many of them do home work?

Answer 47

200/250?

Answer 48

hmm, let do it this way, youve got an idea but its not set yet.

lets take all the girls and place them in a room. we have .. i see an error in your table; 200+200 = 400; not 500

is total girls 200? or is that a typo?

Answer 49

200 + 150 = 250 total if we add up the column so it might have been a typo

put all girls in a room; 250 girls are i the room

how many of them have done homework? 150.

the probability of picking a girl that has done homework, out of all the girls; is 150/250

Answer 50

100 + 150 = 250 ... even i mistype lol

Answer 51

no that's the total of it all together. after i find the total of no homework and homework, i add it all together to get that big number.

Answer 52

right, total events is 500

homework + no homework = 500

girls + boys = 500

Answer 53

the probability of picking a girl, out of everyone thats done homework; is 150 out of 250

the probability of picking a homework, out of everyone thats a girl; is 150 out of 250

its not a very exciting table ....

Answer 54

dinners ready .....

Answer 55

sorry, i had to do something for my mom!!!!! u still there?

Answer 56

would u like to change the table?

Answer 57

@amistre64

Answer 58

can we change the table?

Answer 59

boys girls
homework 58 62 120
no homework 23 22 45
81 84 165

now we have some numbers that wont "be the same"

Answer 60

given the subevent of homework: set everyone in a room that has homework (120 of them)

whats the probability of picking a girl? 62/120

the probability of picking someone that is a girl, given that a person has done homework is 62/120
----------------------------------------

given the subevent of girls: set everyone in a room that is a girl (84 of them)

whats the probability of picking one that has homework? 62/84

the probability of picking someone that has homework, given that they are a girl is 62/84
----------------------------------------

notice that the probability changes depending on the specific event that we are trying to determine.

Answer 61

@amistre64

Answer 62

ah, this one

its too long and is causing me lag .... can we post it new?