2. Find the 90% confidence interval of the population mean for the income of the executive secretaries in makati City. A random sample of 30 executive secretaries The data is in thousands of pesos. 17.0 23.0 13.0 14.0 17.4 20.0 19.0 18.2 16.0 14.5 25.3 30.2 18.3 15.0 20.1 19.0 17.0 21.9 16.3 15.8 22.6 13.0 16.0 14.6 18.2 17.0 25.0 15.9 14.0 22.7

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