Question 1019034
Standard error is a measurement of difference between the sample mean and the true mean. 
Margin of error is a measure of the spread of the data normalized to a normal distribution. 
Margin of error is the product of the standard error and the critical z value.
For 95% it's 1.96.
So,
{{{ME=SE*1.96}}}
{{{ME=0.22*1.96}}}
{{{ME=0.43}}}
So the 95% confidence interval is,
({{{6.1-0.43}}},{{{6.1+0.43}}})
({{{5.7}}},{{{6.5}}}) <--- Rounded because the mean only has one significant digit.