A random stratified sample of 124 pet owners without pet insurance was collected, and out of those sampled, 31 said they would opt for treatment when presented with the choice if the treatment would cost over $5,000 in total. Calculate the margin of error for this result at the 20% level of significance, and construct the corresponding confidence interval for the true proportion of pet owners that do not have pet insurance who would be willing to pay over $5,000 for medical treatment for their pet.

Standard Normal Distribution Table

E=

Round to four decimal places if necessary

Enter 0 if normal approximation cannot be used

Round to four decimal places if necessary

Enter 0 if normal approximation cannot be used