Question 652628
	
  <pre><font face = "Tohoma" size = 3 color = "indigo"><b> 
Hi,
Re TY, Following can also be found using the Excel function BINOMDIST()
BIONOMIAL Distrubtion: P(late) = .65 , n = 10 
Using TI 83 Calculator
P(x &#8804; 2) is binomcdf(10, .65, 2) 0r Excel function BINOMDIST(2,10,0.65,TRUE)
P(x > 7) = 1 - P(x &#8804; 7) = 1 -  binomcdf(10, .65, 7)
0r                            = 1 - BINOMDIST(7,10,0.65,TRUE)
Plain calculator works as well using P = nCx* {{{p^x*q^(n-x)}}} 
P(x &#8804; 2) = P(x = 0) + P(x = 1)  + P(x = 2)
               = 10C0(.65^0)(.35)^10 + 10C1(.65)^1(.35)^9 + 10C2(.65)^2(.35)^8 
P(x > 7) = P(x = 8) + P(x = 9)  + P(x = 10)
Stattrek.com can also be used to check Your work