Use the data in Assignment Problem 16 to calculate a 95% confidence interval for the correlation between attachment and green-space area.

Data from problem 16 

In an increasingly urban world, are there psychological benefits to biodiversity? Fuller et al. (2007) measured the number of plant, bird, and butterfly species in 15 urban green spaces of varying size in Sheffield, England, a city of more than a half-million people. They also interviewed 312 green-space users and asked a series of questions related to the degree of psychological well-being obtained from green-space use. From the answers, the researchers obtained a measure of user “attachment” to green spaces (strength of emotional ties). Their results are in the table at the top of this page.