Copy of The average number of people in a family that received welfare for various years is given below. (Source: House Ways and Means Committee, Health and Human Services Department) Year Welfare family size 1969 4.0 1973 3.6 1975 3.2 1979 3.0 1983 3.0 1988 3.0 1991 2.9 Use "year" as the independent variable and "welfare family size" as the dependent variable, USE THE PREVIOUS PROBLEM AND your excel sheet to answer the following a) Is it significant? yeso b) Based on the above data, is there a linear relationship between the year and the average number of people in a welfare family? Yeso c) What is the estimated average welfare family size for 1986 using a)? Round to 1 decimal places. d) Does the least squares line give an accurate estimate for 1960 or 1995? yeso lick Save and Submit to save and submit. Click Save All Answers to save all answers. Save All Answers