Sample random

The University of Sultan Qaboos Administration decided to choose a random sample from three sections. Statistics, economics and mathematics to estimate the average number of practical training hours. There are 150 students in of statistics section 60 students in Economics section and 96 students in Mathematics section. The university decided to select 15 student from statistics section, 6 students from economic section and 10 student, from mathematics section. Table below shows the data for the students. Number of training hours for statistic section 40, 28, 30, 35,40, 48, 51, 38, 35, 33, 42, 50, 40, 55, 47 Number of training hours for economic section 30, 26 , 30, 28, 30, 35 Number of training hours for Mathematics 25, 22, 24 , 30 , 26, 28, 20, 19, 30, 27 section Find: a) Estimate of the average number of training hours for the three section ) Bound on the error of the estimate A BI I mcbs.proctoring.online is sharing your screen. Stop sharing Hide