Ch08 – From a sample of 100 stores in your area you have fou…

Ch08 – From a sample of 100 stores in your area you have found that the mean price of milk is $3.36. The mean nationally is $3.19 with a standard deviation of $0.23. You are considering the difference between the mean of the sample from your area and the national mean. If you wanted to determine if the price of milk was typically higher in your area, or if your particular sample just happens to have an unusually high mean by chance, which would be the most appropriate null and research hypotheses?