Complete Question 
A genetic experiment with peas resulted in one sample of offspring that consisted of 432 green peas and 164 yellow peas. a. Construct a 95% confidence interval to estimate of the percentage of yellow peas. b. It was expected that 25% of the offspring peas would be yellow. Given that the percentage of offspring yellow peas is not 25%, do the results contradict expectations?
Answer:
The  95%  confidence interval is  
No, the confidence interval includes 0.25, so the true percentage could easily equal 25%
Step-by-step explanation:
From the question we are told that 
   The total sample size is  
    The  number of  offspring that is yellow peas is 
    The  number of  offspring that is green peas   is  
 
     
The sample proportion for offspring that are yellow peas is mathematically evaluated as 
         
          
 
Given the the  confidence level is  95% then the level of significance is mathematically represented as 
        
       
The  critical value of   from the normal distribution table is
 from the normal distribution table is  
       
Generally the margin of error is mathematically evaluated as 
         
=>      
=>      
The  95%  confidence interval is mathematically represented as 
       
=>   
=>   