A sociologist is studying trends in childbearing. She asks expectant parents in different parts of the country about the number of children in their family of origin and the total number of children they plan to have. On an average day of data collection, she gets the results shown in the first three columns of the following table. In this table, fill in the missing values in the XY column, and then calculate ?XY.

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In this table, fill in the missing values in the XY column, and then calculate ZXY. Parent Children in Family of Origin (X) Number of Planned Children (Y) XY A 3 3 9 C 3 2 6 D 2 2 4 ZXY 34 Y Fill in the missing values in the X2 column of the following table, and then calculate 2X2. Parent Children in Family of Origin (X) Number of Planned Children (Y) )(2 A 3 3 9 B 3 1 9 D 2 2 4 Fill in the missing values in the Y 1 column and the (Y 1.)2 column of the following table, and then calculate 2(Y 1)2. Fill in the missing values in the Y - 1 column and the [Y - 132 column of the following table, and then calculate 2(Y 1)2. Parent Children in Family of Origin (X) Number of Planned Children (Y) Y 1 (Y 1)?- m B 3 1 0 0 C 3 2 1 1 E 4 3 2 4 zw- 1)2 = 14 v At the end of the study, the sociologist had a sample of 500 expectant parents. She estimates that there are 6 million expectant parents in the United States. Given this information, n = 6:000:000 'l"