Question

6.118 Change in number insured. The Wall Street
Journal reported a Rand study on the estimated change
in insured Americans from September 2013 to
March 2014.23 Here is an excerpt: A net gain of 9.3 million people with coverage.
That number came with a wide margin of error
(3.5 million people), was driven largely by
increased employer-based coverage, and didn’t fully capture the surge in enrollments that
occurred in late March as the application
deadline for Obamacare plans neared.
The reported margin of error is based on a 95% level of confidence. What is the 95% confidence interval for the change in people with coverage?

Answer 1