Answer:
p(4 successes) ≈ 7.7%
Step-by-step explanation:
p(k successes in n trials) = C(n,k)·p^k·(1-p)^(n-k)
You have n=5, k=4, p=0.4, so the probability is ...
p(4 successes) = C(5,4)·(0.4)^4·(1 -0.4)^1 = 5·0.4^4·0.6 = 0.0768
P(4 success)=0.0768
The Probability for r success in binomial distribution is given by:
P(r success)=
Where n is the number of trails
p is the probability of success in each trial
q =1-p which is the probability of failure
Here r=4
n=5
p=40%=0.4 and q=1-0.4=0.6
Hence, P(4 success)=
=
= 0.0768
y={x+2}-3
y - 3 = -(x + 2)
y - 3 = -x - 2
y = -x + 1
The answer is all real numbers