Do nature walks reduce stress? In this study researchers had 11 participants take a daily 30-minute walk in a regional park for three months. The average age of the participant was 26 years old and 5 participants were men. The participants' average stress score was 20 with a standard deviation of 5 after the three months of daily walks in the park. A separate 12 participants were assigned to a daily 30-minute walk within the business district of downtown Vancouver. Their average age was 24 years old and 7 of the participants were men. After three months their mean stress score was 24 with a standard deviation of 5. Higher stress scores indicate higher levels of stress. Use a directional test with an alpha of 5%.

Conduct the steps of hypothesis testing.