Question 872856
 <pre><font face = "consolas" color = "indigo" size = 3><b>
Hi
Students: P(z >(70-65)/25) = .2 (20% score over 70)

Sample: p(over 70) = .2,   n = 3
P(x = 2) = 3C2(.2)^2(.8)^1  0r    binompdf( 3, .2, 2)= .096   0r 9.6% chance