Expert answer:construct a 90% confidence interval about μ1 –
Answer & Explanation:Assuming that both populations are normally distributed, construct a 90% confidence interval about μ1 -μ2. (μ1 represents the mean of the experimental group and μ2 represents the mean of the control group.)Experimental Controln 22 16x̄ 45.4 40.7s 4.1 13.6The confidence interval has a lower bound of ___ and an upper bound of ___.(Use ascending order. Round to two decimal places as needed.)
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