Question

HELP!!!!!!!!!!!

Answer 1

you mean find a function P(x) that is P(1)=0.30, P(2)=0.40 and so on..?

Answer 2

@ayojenn

Answer 3

im not sure??? lol
whats in the picture is all they gave me??

Answer 4

what are you studying right now?

Answer 5

algebra!

Answer 6

the lesson is "basic rules of probability"

Answer 7

ok, the table showes the probabilitys of 4 events, and it asks you to find the probability that 1 not ocures. Can you do it now?

Answer 8

no im not sure how to do this! lol
can you take me step by step plz?

Answer 9

ok, the probability of a event to happen is equal to
(number of positive outcomes)/(all possible outcomes)
ok till now?

Answer 10

okkkkk

Answer 11

so like you see the porbability of event number 4 is 0.15, it means 15/100. from 100 possible 15 would be positive. Or 15%. OK till now?

Answer 12

you there?

Answer 13

ok ok im here lol i was reading it

Answer 14

another example:
if you drop a dice, what is the probability that the outcome will be 1?

Answer 15

@ayojenn

Answer 16

1/4?

Answer 17

or 3/4??? lol

Answer 18

dice has 6 nummbers, so 1/6. Ok?

Answer 19

ohhhhhhh okkkkk lol

Answer 20

ok, next question: if you drop a dice, what's the probability that the number will be even?

Answer 21

3/6?

Answer 22

or 3/6=1/3. Ok
Anotehr question: whats the probability that the number will be 2 or 3?

Answer 23

2/6?

Answer 24

right, just remmember to simplify 2/6 =1/3.
Next: what's the probability that it will be 1,2,3,4,5 or 6

Answer 25

5/6?!

Answer 26

no, the probability is 6/6=1 so 100%

Answer 27

ok?

Answer 28

6 positive outcomes/6 total outcomes

Answer 29

it means all outcomes are positive

Answer 30

ok?

Answer 31

ok?

Answer 32

ok till now?

Answer 33

ok for NOW lol

Answer 34

im still confused about my question tho

Answer 35

now notice that the probability that 1 will be the outcome is 1/6. The probability that 2 will be the outcome is 1/6, and the probability that 1 or 2 will be the outcome is 2/6 = 1/6 +1/6. So it is the sum of the probabilty of each outcome , ok till now?

Answer 36

okkkkkkk

Answer 37

ok till now lol

Answer 38

so in your case the total outcomes are 4 insead of 6. And question is asking you :"what's the probability of NOT 1" or in other words: "what's the probability of 2 or 3 or 4"

Answer 39

ok till now?

Answer 40

imagine a dice with 4 faces....lol

Answer 41

okkk till now lol

Answer 42

ok a dice with 4 faces...

Answer 43

so just add the probabilities of 2,3,4 to get the answer

Answer 44

9?

Answer 45

oh wait

Answer 46

0.15+0.15+0.40=?

Answer 47

yes yes lol hold on

Answer 48

0.7!!!!

Answer 49

good job

Answer 50

that's your answer

Answer 51

omg finally lol!!! so like if it would say what is the P of it not being 2
i just add all of them EXCEPT 2??

Answer 52

@myko

Answer 53

yes, you right

Answer 54

ok what about this,,,

Answer 55

make new question

Answer 56

what do i have to do with (x>1)

Answer 57

@myko

Answer 58

this is same as you where asked what is P of x=2 or x=3 or x=4

Answer 59

so is same as P of x not 1

Answer 60

but idk what 4 is?

Answer 61

the probability of 1 or 2 or 3 or 4 is =1 no?
so if 1 is 0.3, 2 is 0.4, 3 is 0.15 4 is 1-0.3-0.4-0.15 = 0.15

Answer 62

oh!!!!!!!!!!!!!!!!!!!!!!!!!1

Answer 63

so then i just add all of them except 1 again??

Answer 64

yes

Answer 65

wait but why is the box for 3 bigger than 4 if theyre the same?

Answer 66

it's like if you would have a dice with 4 sides but some sides are bigger then the others. So the probability would be different for big and small sides to comeout

Answer 67

so the size doesnt really matter?

Answer 68

1,2,3,4 is just the way to label the events...

Answer 69

what are the actual event we don't care in this case

Answer 70

hmmm ok

Answer 71

when i subtract them do i put 0.30-0.40-0.15 or?
0.3-0.4?

Answer 72

0.3 =0.30

Answer 73

so its the same answrr?

Answer 74

yep, 0.7

Answer 75

O.o

Answer 76

help me with this?

Answer 77

@myko

Answer 78

post it in a new question plz

Answer 79

closed this one and open new one

Answer 80

ok ok