Are nursing salaries in Tampa, Florida, lower than those in Dallas, Texas? Salary data show staff nurses in Tampa earn less than staff nurses in Dallas (The Tampa Tribune, January 15, 2007). Suppose that in a follow-up study of 40 staff nurses in Tampa and 50 staff nurses in Dallas you obtain the following results. Tampa n1  = 40    X1  = $56,100  S1 = $6000 Dallas  n2  = 50     X2  = $59,400  S2  = $7000 Complete the confidence interval of the data set

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