Several complaints were received from residents on over speeding in a newly constructed road. A team of
Question:
Several complaints were received from residents on over speeding in a newly constructed road. A team of transportation engineers carried out a site visit. After conducting a survey (under controlled conditions but with representative drivers), the speed of vehicles during morning and evening time were noted. The same is given below. Observation Number Morning Evening 1 69 39 2. 81 30 3 81 30 4 65 48 5 50 40 6 85 41 7 45 8 82 77 70 44 9 45 10 85 52 Assuming normal distribution for the speed measurements,
(i) Evaluate the statement "For a probability of 0.5, there exists enough reasons to say speed during morning time is more than in the evening".
(ii) Compute the probability of speed of vehicles during morning time is between 70 and 80 kmph.
International Marketing And Export Management
ISBN: 9781292016924
8th Edition
Authors: Gerald Albaum , Alexander Josiassen , Edwin Duerr