When estimating from a large sample, suppose that one has found the 95% error margin of to be 5.8. From this information, determine The estimated S.E. of Round to three decimal places

Question

When estimating   from a large sample, suppose that one has found the 95% error margin of   to be 5.8. From this information, determine The estimated S.E. of  Round to three decimal places

anonymous · Answer

Some one please help. This is probabl easier than I think but I cant find the mean.

anonymous · Answer

*probably

kropot72 · Answer

The estimated Standard Error is found from
$$S.E.=\frac{margin\ of\ error}{z}$$
where z is 1.960 for 95% confidence level.