CHAPTER 2 EXERCISE: 1. The following are monthly figures on the number of mail (in thousands) that were droppedto the post office in two years. 80 75 64 66 70 78 73 73 67 76 101 73 75 77 84 80 97 62 76 78 82 75 84 77 68 73 70 78 85 81 78 37 73 78 108 86 77 76 118 117 78 67 84 79 73 86 75 79 List the six possible systematic samples of size N=8 that can be taken from this population by starting with one of the first six numbers and then taking each six number on the list. 2. Draw a histogram and frequency polygon for exercise 1. 3. A stratified sample of size n = 120 is to be taken from a population of size N = 8000, which consists of three strata of size N = 4000, N = 2400 and N = 1600. If the allocation is to proportional, how large a sample must be taken from each stratum? 4. Draw a proportional stratified random sample using the table of exercise 1. Determine the sample size using the sloven's formula N n = 1+Ne25. A study was conducted to find the distribution of fraternity members in colleges of a university. If the total population is 12,000 and the students are distributed by college as follows: Liberal Arts = 1,200; Commerce = 4,950; Engineering = 2,700; Science = 2350 and Education = 800, determine the sample using Simple random bi Stratified random B. The following tables shows the number of hours it takes the employees of Hi-Tech Corporation to get to work. Construct a pie chart of this percentage distribution: Number of Hours Percentage 0 -0.5 23 0.6 - 1.0 54 1.1 - 1.5 18 18 - 20 5 7. The following table shows the score of 40 students in a 50-item test: 25 42 14 38 25 31 45 27 16 8 44 36 30 36 37 30 35 32 43 31 48 13 21 32 19 32 23 34 20 27 17 31 20 26 28 44 =) Use the stem-and-leaf display of the above data. b) Construct a frequency distribution table showing the frequency of scores c) Construct the histogram and frequency polygon Study on the attitudes of 5 different religious sects toward artificial family planning in a barangay with population of 10.000 distributed as follows: Religion Frequency Catholic 3,650 Born Again Christian 2. 120 Protestant 1,630 Olesis NI Cristo 1920 7th Day Adventist 680