8.10 An economic survey is designed to estimate the average amount spent on utilities for households in a city. Because no list of households is available, cluster sampling is used, with divisions (wards) forming the clusters. A simple random sample of 20 wards is se- lected from the 60 wards of the city. Interviewers then obtain the cost of utilities from each household within the sampled wards; the total costs are shown in the accompanying table. Estimate the average amount a household in the city spends on utilities and place a bound on the error of estimation. Total amount Total amount spent on utilities spent on utilities Sampled Number of Number of Sampled ward ward households (dollars) households (dollars) 1 55 2210 11 73 2930 2 60 2390 12 64 2470 3 63 2430 13 69 2830 4 58 2380 14 58 2370 5 71 2760 15 63 2390 78 3110 16 75 2870 7 69 2780 17 78 3210 8. 58 2370 18 51 2430 9. 52 1990 19 67 2730 10 71 2810 20 70 2880

8.10 An economic survey is designed to estimate the average amount spent on utilities for households in a city. Because no list of households is available, cluster sampling is used, with divisions (wards) forming the clusters. A simple random sample of 20 wards is se- lected from the 60 wards of the city. Interviewers then obtain the cost of utilities from each household within the sampled wards; the total costs are shown in the accompanying table. Estimate the average amount a household in the city spends on utilities and place a bound on the error of estimation. Total amount Total amount spent on utilities spent on utilities Sampled Number of Number of Sampled ward ward households (dollars) households (dollars) 1 55 2210 11 73 2930 2 60 2390 12 64 2470 3 63 2430 13 69 2830 4 58 2380 14 58 2370 5 71 2760 15 63 2390 78 3110 16 75 2870 7 69 2780 17 78 3210 8. 58 2370 18 51 2430 9. 52 1990 19 67 2730 10 71 2810 20 70 2880

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Description: 8.10 An economic survey is designed to estimate the average amount spent on utilities forhouseholds in a city. Because no list of households is available, cluster sampling is used,with divisions (wards) forming the clusters. A simple random sample o

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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