Flood events. Refer to the statistics pertaining to the global flood events between early January 2019 and late August 2019, Exercise 2.127 (p. 125). Recall that the data includes the 78 affected countries, the total area affected (in square meters), the starting and ending date of the calamity, and the number of people killed. The data is in the saved file. Selected observations are shown in the table below. Consider a straight-line model relating the number of dead (y) and the area (in square meters) (x). Country Area Start End Dead Thailand 78110.94 01/04/2019 01/07/2019 3 Mozambique 357274.22 01/09/2019 01/11/2019 20 Saudi Arabia 632315.72 01/26/2019 01/29/2019 1 Philippines 43546.93 01/26/2019 01/29/2019 0 Australia 51581.36 01/26/2019 01/29/2019 0 f Malawi 77812.85 02/11/2019 03/27/2019 900 f Japan 10883.12 08/28/2019 08/29/2019 2 Bahamas 1721.4 09/01/2019 09/04/2019 5 Algeria 1566.33 09/01/2019 09/02/2019 0 Central African Republic 70469.71 08/19/2019 08/22/2019 1 Russia 86510.96 08/25/2019 08/30/2019 0

a. Is there sufficient evidence (at a = .01) of a positive linear relationship between number of dead (y) and area (in square meters) (x)?

b. Construct a scatterplot for the data and draw the least squares line on the graph. Locate the data point for Malawi on the graph. What do you observe?

c. You learned about the relationship between the total area affected and the number of people killed in Exercise 2.127. Now, remove the Malawi entry from the data set and refit the straight-line model to the remaining data. What conclusions can you draw from this analysis? Learning the Mechanics