Question

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1. A research assistant has been doing such a fabulous job more work has been assigned! The professor has collected data on the number of homicides in major Southern cities in the U.S. With a sample of 208 cities she has found a mean homicide rate of 46.9, with a standard deviation of 12.35. The α = .05; calculate the resulting two-tailed 95% confidence interval for this set of data.   

First write down what information is provided by the problem.

N =

X-bar =

S =

α = .05

Z_α =

          

• Choose the appropriate formula; simply plug the numbers into the formula, calculate and interpret the confidence interval.

Answer 1

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