You decide to use a simple regression analysis to examine whether a model with number of exams as a predictor can be used to explain variability in hours of sleep. Use the r value that you calculated in #8 in conjunction with the output in #11 below to answer the following questions.

9. Calculate b (the unstandardized slope coefficient; 4)

10. (standardized slope coefficient) is -0.82. Explain specifically what this value means. (2)