Using probability distribution liste

x. 0. 1. 2. 3

P(x). 0.2. 0.1. 0.3. 0.4

A- find the mean ,variance,and standard deviation

B- what is the probability that p(x is at least 1)?

C-what is the probability that p(x is less than 3)?

p(x)

Σx^{2}p = 4.9

Var(X) = Σx^{2}p − μ^{2}

Standard Deviation =

σ = √Var(X)

σ = √(1.29)

= 1.13

B- the probability that p(x is at least 1) = P(x=1) +P(x=2)+ P(x=3) = 0.1 + 0.3+ 0.4 = 0.8

C- the probability that p(x is less than 3) = P(x=0) +P(x=1)+ P(x=2) = 0.2 + 0.1+ 0.3 = 0.6

Secure Information

Content will be erased after question is completed.

Enter the email address associated with your account, and we will email you a link to reset your password.

Forgot your password?

Sign Up