1. A researcher predicts that dog owners living in the rural area spend different amount of time walking their dogs as compared to dog owners living in the city. The researcher gets a sample of 20 dog owners in the rural area and 22 dog owners in the city. The mumber of hours per week that an owner spends walking his or her dog is recorded. The data are as follows: Dog Owners in the rural area Dog owners in the city M=15 SS=320 M=10 SS=205 n=20 n=22 a. State the null hypothesis and the alternative hypothesis in symbol b. Test the hypothesis using a = .05