A Production Manager Is Concerned with the Average Weight of Metal

question 62

Multiple Choice

A production manager is concerned with the average weight of metal ingots.From past data,she knows that $\text { ? }$
is 1.6 lbs.The manager wishes to make a 95% interval estimate for $\mu$ using a sample of 64 ingots.The accuracy of this sample in estimating the population mean will be:

• A) 0.20.
• B) 0.392
• C) 1.96.
• D) 1.6.
• E) \(\pm\)0.05.