Question: Independent random samples of sizes n1 16 and n2
Independent random samples of sizes n1 = 16 and n2 = 25 from normal populations with σ1 = 4.8 and σ2 = 3.5 have the means 1 = 18.2 and 2 = 23.4. Find a 90% confidence interval for µ1 – µ2.
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