Renejay, A biologist may measure the height of 30 randomly selected plants and then use the sample mean height to estimate the population mean height. -SAMPLE MEAN - Z CONVERSION FORMULA, H2wo, It is considered when the sample size is atleast 30, Yawi, It is used when the sample size is sufficiently large, Ch4knu, Symbol used for population mean, Dogie, Symbol used for population size, Karltzy, Congratulations! You won a Php20 load

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