A research company recently surveyed 6960 adults in one country about reform of the​ country’s senate. Of​ these, 38% answered​ “Yes” to the question​ “Do you support abolishing the​ senate?”. What is the margin of error for a 90% confidence interval for the population proportion based on this sample? 

"Get 15% discount on your first 3 orders with us"
Use the following coupon
FIRST15

Order Now