I have already attempted the solution and I am trying to check if I am ok

/in /by

I have already attempted the solution and I am trying to check if I am ok

Sample size: 99% confidence interval for the average yield (cups per pound), margin of error 0.3 (three tenths of a cup), population standard deviation, sigma, is 1.2 cups. 

 
Planning Value for P-Star:  
Desired Margin of Error:  
Confidence Level:  
   
Intermediate Calculations:  
Z-Multiple:  
Sigma:  
M.E. Squared:  
Z-Multiple Squared:  
   
 
Sample Size Needed: