2 [17 pts] Inference in SLR: Are people happier when they make more money? A recent study by a senior fellow at the Wharton Business School finds strong relation between income and happiness. The new study says that money improves happiness no matter how much someone already has. A dataset contains 498 observations record the normalized income and happiness and the correlation between these two variables is 0.8656. A quick summary of the dataset is given in the following