Can someone help me with my Math work ? I am so confused with it . How do you solve this ?

P(0<z< 0.595) = P(z< 0.595) - P(z<0 ) 
P(z<0) = 1/2  = 0.5 
P(z< 0.59) = 0.72240  
P(z< 0.60) =  0.72575

so  0.595 is exactly half-way between the two values 
(0.72240 + 0.72575) /2  = 0.724075
 but since the table is only accurate to 5 digits 
I will round up 
P(z< 0.595) = approx.  0.72408  

P(0<z< 0.595) = 0.72408- 0.5 = 0.22408  
 
if you had a 4 digit table  0.7241-0.5 = 0.2241      

Use the Normal Distribution table or a Calculator
---> 0.2241