In a survey of 1,000 television viewers

In a survey of 1,000 television viewers, 40% said they watch network news programs. For a 99% confidence level, the margin of error for this estimate is 3.99%. If we only want to be 90% confident, how will the margin of error change?

      
The margin of error will remain the same.

      
Since less confidence allows a narrower interval, the margin of error will be larger.

      
Since less confidence allows a wider interval, the margin of error will be larger.

      
Since less confidence allows a wider interval, the margin of error will be smaller.

      
Since less confidence allows a narrower interval, the margin of error will be smaller.