A random sample of students were asked the amount of money t…

A random sample of students were asked the amount of money they spent at a coffee shop on a given day and the number of exams they have that week.  The following scatterplot and regression equation were generated. What proportion of the variation in money spent can be explained by the regression line that uses number of exams as a predictor?

A coffee shop manager would like to study the amount of mone…

A coffee shop manager would like to study the amount of money college students spend at their shop on a given day.  The following test was completed in Minitab for testing whether the average amount of money spent at the coffee shop by college students is greater than $5 a day. Which is a correct conclusion based on the test results, using a 5% level of significance?