11. A sampling study is based on category proportions of 30 and 70 percent. From a practical standpoint it is determined that 900 samples can be taken. What limit of error can be expected if 95 percent confidence limits are desired? Note that copies of the nomograph and the table are provided with the assignment.

A. Determine this value as an estimate from the nomograph or table. Submit a copy of the marked up nomograph or table to indicate the respective values.

B. Determine the limit of error by using the formula..

2. If instead of a 95% confidence limit, a 90% confidence limit is desired (at the same limit of error as in the previous question,- how many samples would be needed

A. table/nomograph estimate?

B. Calculated value?