A Simple Random Sample of 100 Bags of Tortilla Chips

Multiple Choice

A simple random sample of 100 bags of tortilla chips produced at Plant A is selected every hour for quality control.In the current sample,18 bags had more chips (measured in weight) than the labeled quantity.This sample information is being compared to data collected at Plant B.In the current sample of 100 bags of chips from Plant B,12 bags had more chips than the labeled quantity.Let represent the plus four estimate of the difference in the two proportions.What is the value of the standard error of ?

A) 0.0384
B) 0.0503
C) 0.0508
D) 0.0604