18. The sample size of a p chart for a fertilizer packing line needs to be determined. Preliminary data indicate that 8% of the bags are outside the weight specifications.

What is the sample size for a precision of 10% and a 70% confidence level? For a precision of 10% and a confidence level of 99%? For a precision of 10% and a confidence level of 95%? What conclusions can you make concerning the precision and confidence level?