MAT 122 Final: MAT122-2008Fall
Document Summary
Instructions: l-here are six (6) questions on this exa[ . Answer the questions in the spaces providcd in this exam booklet. Show wolk wl. rere possible; paltial cledit requires sorne cortect ancl applopriate work. Ifyou neecl scratch paper, ask one of the exam proctors. 100: 1, professor chern keeps careful records of scores fron-r all his courses. F-or one particular course the mean of scores on the final exam has historically beer. r 76. Following the infoduction of a pi:ogrammable calculator lo the course, professor. Chern finds lhat a sample of25 scores on 1he final exam have a sfandald deviation of s : 18. 9. With c :. 05, test the claim that the meat. r is diffelent fiom 76. 2, in a receut goverr. mer t survey of 400 randomly selected households in california, 51 were foulld to be living below the national poverty level standard. 400 households in vermont, 18 were found to be living below the poverty level standard.
