Mathematics, 10.06.2020 17:57 kenziepickup

A study was conducted to determine if the salaries of librarians from two neighboring cities were equal. A sample of 15 librarians from each city was randomly selected. The mean from the first city was $28,900 with a standard deviation of $2300. The mean from the second city was $30,300 with a standard deviation of $2100. Construct a 95% confidence interval for u1 -u2. a) (-4081, 597)
b) (-2054, 238)
c) (-2871, 567)
d) (-3125, 325)

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