Question

Use the binomial expression (p + q)n to calculate a binomial distribution with n = 5 and p = 0.3.

Answer 1

(p+q)n

=(0.3+q)5
=1.5+5q

distribute the 5 into what is in the ( )
5*0.3=1.5
5*q=5q
=1.5+5q

Answer 2

This was for a test that I had to retake. I put that exact answer and she told me it was wrong

Answer 3

(p + q)^5 = p^5 + (5p^4)(q) + (10p^3)(q^2) + (10 p^2)(q^3) + 5p(q^4) + q^5

If p = 0.3, then q = 1 - p = 1 - 0.3 = 0.7.

Answer 4

Ask her how it is wrong

Answer 5

Because the 5 she told me what useless. Like they throw it in to confuse you. But I figured it out. Thanks guys(:

Answer 6

Let X = number of successes, you have a binomial distribution. and p is the probability of success, q is the probability of failure.
X can equal 0,1,2,3,4,5

P(X = x) = nCx p^x q^(n-x)