Question: Open nlsy97_ chapter7 . dta. A friend says that Hispanic families have more children than do other ethnic groups. Use the variables hh18_ 97 (# kids under 18) and ethnic97 (dummy variable where 1=Hispanic) to test this hypothesis. Are the means different? Is there any substantive significance to this finding? Check the distribution of hh18_ 97. Use summarize, detail and tabulate. What are the medians of each group? Run a median test. Is the difference significant? How can you reconcile this with the medians you computed?