Consider the Cleaning data that was discussed in the class. Here, the explanatory variable is the number of cleaning personnel (taking the values 2, 4, 6, 8, 10, 12, 16), and the response variable is the number of rooms cleaned by them. As observed before in the class, the response variable takes multiple measurements corresponding to each -values, and that the spread of the -values shows an increasing trend with incraesing values. Thus, we are concerned about unequal variances in our regression model. What weight would you use in this weighted regression model? Assume that denotes the sample variance of the -values corresponding to