Solutions for Exam 1 - Statistics for Engineer | STAT 4705, Exams of Statistics

Download Solutions for Exam 1 - Statistics for Engineer | STAT 4705 and more Exams Statistics in PDF only on Docsity! ag 4 Nam Feb. 11, 2000 STAT 4705 Test 1 A student organization has 24 members consisting of 4 freshmen, 5 sophomores, 8 juniors 1. and 7 seniors. Suppose that 4 people are selected at random to form a committee (a) Find the probability that all four people selected are juniors. ey Bpoas . dy io Qt steak’ La Feet ' (b) Suppose that you are a junior and a member of this organization and you are told that all four people selected are juniors. Compute the conditional probability that you were selected for the committee. Am Ker TMS = . B+ fou DCA) = 4M sens ft PAS) Plt (acm) > ews *) rein d* a” 48 If a pair of dice are tossed 6 times, what is the probability of obtaining a total of 7 or 2. 11 twice, matching pair once, and any other combination 3 times? von B % i Poa gS Ve tyfend feVyOS Ve main Go of) 2 3, LER CEN AG (S23 5 fe Fon p(w w bok . . 6 Wel WOMER, 0" 307 8 “6 a pipeiys ft me * 7a? ib Go Ml)» loin) » event) } _ be 2 6 t CPAIA) eet a pe) a oe me 2 Plamteses)s Be CE cf ‘£) = Be - y ( () (EE sy)