Solve each of file following systems Find the solution y1 y2

Solve each of file following systems. Find the solution: (y\'1 y\'2) = (y\'1 y\'2).

Solution

a)
Option C . Approximately normal
np*(1-p)>=10, 700*0.7*0.3> 10   
Can Use Normal Approximation                  
b)
Mean ( np ) =700 * 0.7 = 490
c)
Standard Deviation ( npq )= 700*0.7*0.3 = 12.124