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No use the Binomial distribution
p= 1/3 for tie
p=1/6 for "0-0" tie

so i would use this formula:
P^k * (1-p)^n-k
and for part A, I would plug in 10 for n and 3 for k???

http://en.wikipedia.org/wiki/Binomial_distribution#Probability_mass_function

n=10 and k=3

so im correct. woohoo! :D

haha :)

ok, so i get .0021676912. is that the final answer or is there anything else i needa do?

for part A ?
i get about 0.26

yeah, how'd u get .26 ??

im confused about the second half...
after the first equal sign

ok. so i was getting .0021676912 because i didn't multiply it by 120. makes sense.

o because half would equal zero-zero ??

right

and part Cs answer will basically be the same as part B since they're both p=1/6?

umm yep thats what it looks like

ok coo ! :)

|dw:1360115375877:dw|

@satellite73
can you continue where @dumbcow left off??? they are no longer online. :(

4 is poisson, 5 is binomial

what number are you on?

number 7

it's asking me to repeat the steps of #6 but idk what to really do

damn i don't know squat about the normal distribution
sorry

its like the picture i drew above ^^^

i know, but you need a table to calculate these

the mean is 180 right?

yes and the standard deviation is 20

then you need to convert to a z score or something right? so you can look these up in a table

ok yeah

for example
\[\frac{165-180}{20}=-.75\]

you can use this
http://www.danielsoper.com/statcalc3/calc.aspx?id=2

i dont think thats how it works...
are both sides supposed to be equal but opposite?

no

*arent

so your job is to find the area under the curve from -.75 to .25
this takes a couple steps

you got that?

im soaking it all in

|dw:1360121214382:dw|

|dw:1360121361823:dw|

yeah i see what you are doing

ok good

ok so we get 0.37207903 or 37% chance ?

i am having trouble scrolling up, but i did find the numbers you need, i just didn't subtract

yeah that looks right

can you assist me with #8 too?

|dw:1360121910130:dw|

where do i go from here??

do you have a table?

oh forget what i wrote above
you just need to go to 95% short people can sit anyway

im confused. can you reword.

yeah we can use that

.82894

so we find .95 in the table, and see what the corresponding z score is

looks like about 1.64 or 1.65 half way between them actually
lets pick one

...ok

and then what?

thats the final answer??

yeah i forgot what the question was
can you repost so i don't have to keep scrolling down?

nvm
the limit of the height adjustment is what you wanted
so yes, that should be the answer

should i solve or leave as is

of course they want a number
i would say about 213 or so

i got 221 as my final answer

for the 98 % curve

yeah i go the same thing
gotta run
good luck!

thanks a lot!