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Statistics S1 Doubts

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please elaborate,p<10 is given ,not p<8,2,so we'll consider p<8,2 as p<0??
No noooo.... I guess u confused...
First we'll find P(X<8.2) which is 0.5...
So therefore, X is binomially distributed with n=35 and p=0.5
So, mean = np = 35*0.5 = 17.5 and variance = npq = 17.5 * 0.5 = 8.75
So, X is normally distributed with mean 17.5 and variance 8.75
So now, u can find P(X<16) by normal distribution...
Note: Do take care of the continuity correction
:)
 
Messages
283
Reaction score
506
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103
No noooo.... I guess u confused...
First we'll find P(X<8.2) which is 0.5...
So therefore, X is binomially distributed with n=35 and p=0.5
So, mean = np = 35*0.5 = 17.5 and variance = npq = 17.5 * 0.5 = 8.75
So, X is normally distributed with mean 17.5 and variance 8.75
So now, u can find P(X<16) by normal distribution...
Note: Do take care of the continuity correction
:)
how u come to know P(X<2) is 0.5.it isnt given in the data,......how will we then calculate p(X<2)/?
 
Messages
283
Reaction score
506
Points
103
No noooo.... I guess u confused...
First we'll find P(X<8.2) which is 0.5...
So therefore, X is binomially distributed with n=35 and p=0.5
So, mean = np = 35*0.5 = 17.5 and variance = npq = 17.5 * 0.5 = 8.75
So, X is normally distributed with mean 17.5 and variance 8.75
So now, u can find P(X<16) by normal distribution...
Note: Do take care of the continuity correction
:)
please post he answers of the question i send the link too
 
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