Question

Que. No. 9
1 marks
In binomial distribution n=6 and p=0.9,
then the value of P(X=7) is​

Answer 1

Answer:

In binomial distribution n=6 and p=0.9, then what is the value of P(X=7)?

By definition, n = 6 means you have 6 trials .

You cannot have 7 occurrences in 6 binomial trials.

So the P( X = 7) = 0

Additionally, the formula is not defined for X >6.

P(X=k) = (n k) (p)^k (1-p)^(n-k)

Means

X has values 0,1,2,3,4,5, and 6

X cannot be bigger than N

X will never be 7

P(X = 7) = 0

(n k ) = n!/ (k! (n-k)! )

if k> n, then

(n-k) < 0

a negative factorial is not defined