A study was conducted to determine if the salaries of firefighters from two neighboring cities were different. A sample of 75 firefighters from each city was randomly selected. The mean from the first city was $38,200 with a population standard deviation of $3100. The mean from the second city was $40,150 with a population standard deviation of $3300. Construct a 99% confidence interval for μ1 - μ2.
A) (-3297, -603)
B) (-2871, 567)
C) (-4081, 597)
D) (-2054, 238)

Question

A study was conducted to determine if the salaries of firefighters from two neighboring cities were different. A sample of 75 firefighters from each city was randomly selected. The mean from the first city was $38,200 with a population standard deviation of $3100. The mean from the second city was $40,150 with a population standard deviation of $3300. Construct a 99% confidence interval for μ1 - μ2.
A) (-3297, -603)
B) (-2871, 567)
C) (-4081, 597)
D) (-2054, 238)

anonymous · Answer

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