Question

Find the binomial distribution
V(x)= npq
of tossing two dice together.

Answer 1

what do u want?

Answer 2

what will n, p and q be?
i no n=1 but im little confused with p and q

Answer 3

i was thinking it is 2/12 or 1/6 because 2 possibilities out of 12

Answer 4

yes

Answer 5

i thought it was coin for a second

Answer 6

what is V(x)?

Answer 7

why is it a variable of x when n*p*q have no x in them

Answer 8

that is the equation

Answer 9

say it is rolling one die. would p= 1/6 and q=5/6

Answer 10

this is the probabillty of getting only 1 of the number u want

Answer 11

so say you want the number '1' on only 1 dice then|
then prob = 1/6*5/6

Answer 12

so V(x) im guessing x = the number of times you want it to appear

Answer 13

yes

Answer 14

V(0)=5/6* 5/6
V(1)=1/6*5/6
V(2)=1/6 * 1/6

Answer 15

oh and multiply V(1)* 2

Answer 16

because u can also have the case where 5/6 * 1/6

Answer 17

i think let me think about that one for a sec

Answer 18

ok b/c i was wondering why the variance is the same for rolling one die and rolling two dice.

Answer 19

ok yep multiply by 2

Answer 20

rolling one die:
n=1
p=1/6
q=5/6
npq=5/36

rolling 2 dice:
n=1
p=2/12 or 1/6
q= 10/12 or 5/6
npq=5/36

Answer 21

umm???

Answer 22

n=number of trials
p=probability of success
q= probability of failure
sorry im confusing you

Answer 23

what is this rolling one die and rolling 2 dice? you are always rolling 2 dice

Answer 24

do you mean landing the number you want once and landing it twice

Answer 25

i had a problem where im rolling one die and another problem rolling 2 dice. i got the same answer for both so i was just wondering what im doing wrong

Answer 26

oh u are rolling one die twice you mean?

Answer 27

as opposed to rolling 2 dice at the same time?

Answer 28

2 dice same time

Answer 29

im talking about the problem where u had only 1 die

Answer 30

how many times did u roll the 1 die...

Answer 31

once

Answer 32

lol then how are u getting 5/36 prob

Answer 33

dont get confused this stuff is very simple

Answer 34

you are too worried about the formulas

Answer 35

just think about it, if you roll a dice whats the chance u get the number you want

Answer 36

1/6...

Answer 37

if you roll it again and u want the same number
then 1/6 * 1/6 because only out of 1/6th of the first dice numbers will be urs
and then another 1/6th of the 2nd dice