5. Suppose in a city block, there are 200 households (HHs) of which 130 are Omani (O) and 70 expatriate (E). A random sample of 15 households was selected to estimate the medical expenses (in RO) per household per year. The following table provides the sample information. Household (HH) Nationality Medical expenses (RO) 1 200 E 350 3 250 4 150 5 E 250 200 7 E 500 8 300 450 10 E 400 11 E 100 12 80 13 350 14 E 450 15 120 O= Omani, E=Expatriate 1) Estimate the overall average medical expenses per household and obtain a 99% confidence interval for the estimate. Interpret the results. ) Estimate the total medical expense of all the HHs in the city block and place a bound on the error of estimation. :) How large the sample should be taken to estimate the average medical expense of the HHs in the city block with a bound of 50 RO? Use 120 as an approximation of population standard deviation. d) Estimate the proportion of expatriate household in the city and place a bound on the error of estimation. Interpret the results.

5. Suppose in a city block, there are 200 households (HHs) of which 130 are Omani (O) and 70 expatriate (E). A random sample of 15 households was selected to estimate the medical expenses (in RO) per household per year. The following table provides the sample information. Household (HH) Nationality Medical expenses (RO) 1 200 E 350 3 250 4 150 5 E 250 200 7 E 500 8 300 450 10 E 400 11 E 100 12 80 13 350 14 E 450 15 120 O= Omani, E=Expatriate 1) Estimate the overall average medical expenses per household and obtain a 99% confidence interval for the estimate. Interpret the results. ) Estimate the total medical expense of all the HHs in the city block and place a bound on the error of estimation. :) How large the sample should be taken to estimate the average medical expense of the HHs in the city block with a bound of 50 RO? Use 120 as an approximation of population standard deviation. d) Estimate the proportion of expatriate household in the city and place a bound on the error of estimation. Interpret the results.

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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