Question

for a negative binomial distribution if nean and standard deviation are respectively 9and 6 then find thevalue of n​

Answer 1

Answer:

Please tell me also please please

Answer 2

Answer:

ANSWER

Let n and p be parameters of binomial distribution. 

Here,

Mean = np=9

Variance = npq=6

npnpq=96

q=32

p=1−32=31

Thus, n=27

Hence, binomial distribution is given by,

P(X=r)=27Cr(31)r(32)27−r, r=0,1,2,...,27

Comparing with given we get, k=27