A remedial program evenly enrolls tradition and non-traditional ...

[MirandaLo]

A remedial program evenly enrolls tradition and non-traditional students. If a random sample of 4 students is selected from the program to be interviewed about the introduction of a new on-line class, what is the probability that all 4 students selected are traditional students?

Question 2

Let X be a binomial random variable with n = 25 and p = 0.01.
 a. Use the binomial table to find P(X = 0), P(X = 1), and P(X = 2).
  b. Find the variance and standard deviation of X.

[vseab]

Answer to Question 1

0.0625

Answer to Question 2

a. P(X = 0) = 0.7778, P(X = 1) = 0.1964, and P(X = 2) = 0.0238
b. 2 = np(1 - p) = 25(0.01)(0.99) = 0.2475 and  = 0.4975

[MirandaLo]

Excellent

[atrochim]

Wow, this really help