stats problem

[slayers]

Hey Guys ,Please Solve this for me,
Z~N(0,1)
P(-s < Z < s )=0.90
and can you people explain it too.???????????? :unknown: :unknown:

 

[memyself15]

post it in international AS and A LEVELS in CIE FORUM

 

[shahlakh]

Yeah she is right

 

[Silent Hunter]

refer to the following link

viewforum.php?f=26

post it here.

 

[princesszahra]

Hey Guys ,Please Solve this for me,
Z~N(0,1)
P(-s < Z < s )=0.90
and can you people explain it too.???????????? :unknown: :unknown:

phi(s) - phi(-s)=0.9
phi(s) - ( 1- phi (s))=0.9
phi(s)-1+phi(s)=0.9
phi(s)+phi(s)=0.9+1
2 phi(s)=1.9
phi(s)=1.9/2
phi(s)=0.95

now find the value from the normal distribution table!! HOPE YOU UNDERSTOOD!!
sorry if there are any mistakes,i did this one year back!didnt touch it after that!!

 

[slayers]

AS LONG AS THERE IS PRINCESS ZHARA.. i will always get out of problems

 

[shahlakh]

Hey Guys ,Please Solve this for me,
Z~N(0,1)
P(-s < Z < s )=0.90
and can you people explain it too.???????????? :unknown: :unknown:

phi(s) - phi(-s)=0.9
phi(s) - ( 1- phi (s))=0.9
phi(s)-1+phi(s)=0.9
phi(s)+phi(s)=0.9+1
2 phi(s)=1.9
phi(s)=1.9/2
phi(s)=0.95

now find the value from the normal distribution table!! HOPE YOU UNDERSTOOD!!
sorry if there are any mistakes,i did this one year back!didnt touch it after that!!

princeszahra u are good in maths..............mashallah

 

[princesszahra]

@slayers and shahlakh
Thank you!!!!

 

[shahlakh]

u welcome