With the growth of internet service providers, a researcher decides to examine whether there is a correlation between cost of internet service per month (rounded to the nearest dollar) and degree of customer satisfaction (on a scale of 1 - 10 with a 1 being not at all satisfied and a 10 being extremely satisfied). The researcher only includes programs with comparable types of services. A sample of the data is provided below.

dollars 11 18 17 15 9 5 12 19 22 25

satisfaction6 8 10 4 9 6 3 5 2 10

1. Compute the correlation coefficient.
2. What does this statistic mean concerning the relationship between amount of money spent per month on internet provider service and level of customer satisfaction?
3. What percent of the variability is accounted for by the relationship between the two variables and what does this statistic mean?