9. The following cost data pertain to the operations of Rademaker Department Stores, Inc., for the month of March. Corporate headquarters building lease 380.000 Cosmetics Department sales...

1.
 
 
   
         
     
     
         
     
1
.06 .17 3 .31 .28 1
3 1 .82 .18
3 1 2 3
.06 .17 .18 .41
2 1 2 1 .17
.83
1 1 1
1 .06 .94
3 3 4 5
.18 .31 .28 .77
5 1 5 1 .28 .72
x
we knowthat
p X
p X
i p X
ii p X p X p X p X
iii p X p X
iv p X p X
v p X p X p X p X
vi p X p X

     
   
      
   
     

   
  
      
   
      

   
   
      
5
1
5
2 2
1
22
2
* 1*.06 2*.17 3*.18 4*.31 5*.28
3.58
*
1*.06 4*.17 9*.18 16*.31 25*.28
14.32
var
14.32 3.58 1.5036
i i
i
i i
i
mean E X X p x
E X X p x
X E X E X


      


    

 
  



St Deviation=var^.5=1.226
2.
 
 
     
 
   
2
2 9 ! 2 11 !* 2 9 * 2 10
2 11 ! 2 11 !
2 9 * 2 10
4 38 90
n n n n
n n
n n
n n
   

 
 
  
3.
 
 
   
   
   
     
   
8 1 7
1
8 6 2
6
10
10 .2
10 1 .2 .8
8
1
1 *.2 *.8 0.3355
6 *.2 *.8 .00115
3 1 2
2 0
n rn r
r
let X random sampleof car more than year
p car more than year
p car not more than...