7a

You are a business analyst for Northrop Grumman and are using the following data and regression to analyze the relationship between production volume of a radio part and total production cost. Your research question is: "How does production volume affect total cost?" Production Volume (units) Total Cost ($) 100 1727 200 2682 300 3719 400 4623 500 5595 600 6286 700 7571 800 8291 900 9153 What is the margin of error for a 95% condence interval for the estimated total cost when production is 1000 radio units? (Round to one decimal place.)