1.. We found 8 companies that have done both types of remodeling projects, as follows:

(a)Name the variable you need to check for the normality, skewness, and outliers. [1]

(b)Use SGC to draw the appropriate graphs for the checking in part (a) and comment them. Based on the graphs, which test should we use? [4]

(c)With a 5% level of significance, do we have enough evidence to conclude the cost of remodeling kitchen is less than that of remodeling master bedroom? [5]

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