In: Statistics and Probability
In a sample of 190 adults, 135 had children. Construct a 90%
confidence interval for the true population proportion of adults
with children.
Give your answers as decimals, to three places
< p <
We have given here,      
           
       
          
           
   
x=135          
           
n=190          
           
Estimate for sample proportion      
           
       
Level of significance is =1-0.90=0.1      
           
Z critical value(using Z table)=1.645  
           
   
| 0.656<p<0.765 |