MAT 122 Final: MAT122-2009Fall
Document Summary
Sign this cover page and enter your suid number below. There are six (6) questions on this examination. Answer the questions in the spaces provided in this exam booklet. Show work where possible; partial credit requires some correct and appropriate work. Other materials are not allowed, if you need scratch paper, ask one ofthe exam proctors. Total (60: a certain soft-drinkbottling machine is supposed to put 12 ounces of product into each bottle. In a recent quality control inspection, a sample of the contents of 25 bottles from this machine had a mean of i 1. 86 ounces and a standard deviation of . 24 ounces. At the . 05 level of significance test the claim that the mean contents of all bottles from that machine is less than 12 ounces, It is rumored that at least 20%o of the students in a certain statistics professor"s class get an 4. In an examination of 400 student records 68 a"s were found.
