Question 876253
 <pre><font face = "Tohoma" size = 3 color = "indigo"><b> 
Hi
P(20 &#8804; x &#8804; 29  ) = P( -1.268 &#8804;  z  &#8804;  -.340)
                 = P( z &#8804;  -.340) -P(z  &#8804; -1.268)
                 = .3669 - .1024 = .2645 
n = 3
b) P(2) = 3C2(.2645)^2(.7355)^1