Answer:
The value is  
Step-by-step explanation:
From the question we are told that 
     The population proportion is 
    The sample size is n = 343 
  Generally given that the ample size is large enough , i.e  n > 30 then the mean of this sampling distribution is mathematically represent 
       
  Generally the standard deviation is mathematically represented as 
       
=>    
  
=>   
Generally the the probability that the sample proportion will differ from the population proportion by less than 4% is mathematically represented as 
         

      
=>  
From the z table  the area under the normal curve to the left corresponding to  1.887  and  - 1.887  is 
       
and  
      
So 
      
=>   