A new fertilizer was applied to the soil of 290 bean plants., 30% showed increased growth. Find the margin of error and 95% confidence interval for the precentage of all bean plants which show...

A new fertilizer was applied to the soil of 290 bean plants., 30% showed increased growth.  Find the margin of error and 95% confidence interval for the precentage of all bean plants which show increased growth after application of the fertilizer.  Round to 2 decimals

1.  Margin of Error (as a percentage)

2.  Confidence Interval ____________% to _____________%.