Statistics 2(72) discussion!!!!

[mrpaudel]

tell me the answer of type I error guys....i got 12.5% what bout others??

 

[sourgho16]

i don't remember the value but we had tu use binomial i think prob of x greater = 4

 

[mrpaudel]

yeah...did the same...and whats the value of p we have to use there????

 

[sourgho16]

1/6

 

[linab12]

0.069 i guess.
P=1/6

 

[mrpaudel]

actually did the same...but didnot get 0.069...i got 0.125...!!

 

[mrpaudel]

1-{P(X=0) to P(X=3) using p=1/6 and n is 12...how can u get 0.069..!!

 

[sourgho16]

n i dont think was 12 it was 10 or something...i dont remember but it wasnt .125 for me too :unknown:

 

[sourgho16]

i think it was .070....or .069 ..anyways what about the probability that the team will score at least 1 goal in each of the next 10 matches??? mean was 1.8 goals per match???

 

[linab12]

n was 10 not 12!
i think the answer was 0.164!i didn't get it right though :S!

 

[sourgho16]

wat ans r u saying was .164? the q that i posted???

 

[linab12]

yes, the one about the matches!
what was urs?

 

[mrpaudel]

U can use normal there....and mean is 18 there...multiplying 1.8 by 10...and use normal..!! continuity correction shud b there...!! thats it..!! got that correct....

 

[mrpaudel]

would some1 plz xplain the type I error..i mean how u ppl got 0.069......the thing is 1-{ P(X=0) to P(X=3) }...we have to use n=12 p=1/6 and thats it..!! how u got 0.069..plz xplain!!....bt stil...i will lose only one mark or max two..coz i jus did correct...if then..i think i messed up in calculation part..!!

 

[sourgho16]

wat did you use as sample mean in that matches problem if you used normal??

 

[sourgho16]

and linab12 r u sure about the ans i.e its .164???

 

[mrpaudel]

mean is 18 and variance is also 18....so any prblm u got on that??

and i dont think we can get 0.164...i got 0.125...n i dont think i did anything wrong!!

 

[linab12]

not 100% sure .. all my friends have the same answer!but they didn't use normal!
how did u get 0.125?

 

[mrpaudel]

for the matches one...u have to use normal..!! and for that type I..i dont know.how i get that..!!

 

[linab12]

i was talking about the matches one!its so confusing!
and about type 1 error n was 10 !thats why we have different answers!