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O CONFIDENCE INTERVALS AND HYPOTHESIS TESTING Confidence interval for the population mean: Use of the standar... V The union for a particular industry has determined

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O CONFIDENCE INTERVALS AND HYPOTHESIS TESTING Confidence interval for the population mean: Use of the standar... V The union for a particular industry has determined that the standard deviation of the daily wages of its workers is $18. A random samp|_e of 80 workers in this industry has a mean daily wage of $119. Find a 95% condence interval for the true mean daily wage of all union workers in the industry. Then give its lower limit and upper limit. Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place. (If necessary, consult a list of formulas.) Lower limit: I] Upper limit: I]

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