Question: Sample with size n = 100 has mean= 30. Assuming the population standard deviation is 8, construct 95% confidence interval for population mean. Use formula

  1. Sample with size n = 100 has mean= 30. Assuming the population standard deviation is 8, construct 95% confidence interval for population mean. Use formula on page 312, z/2= 1.96

    between 28.4 and 31.6

    between 27.0 and 33.0

    between 26.1 and 34.2

    between 24.1 and 35.9

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