11. Let us assume that there are 280,000 voters in the NCR COMELEC district Barangay 1 clustered precinct voter's list. a. Solve the population mean, variance, and standard deviation. b. Find the number of samples per strata (precinct). Samples per Strata Voter's Population (in thousands) Precinct x-μ (x-μ)² (in thousands) 0001A 26 0002A 46 0003A 32 0004A 54 0005A 70 0006A 29 0007A 23

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