Use this problem to answer questions 6-13. The following data came from an international study addressing…

Use this problem to answer questions 6-13. The following data came from an international study addressing a possible relationship between age at first birth (that is, the birth of a woman’s first child) and subsequent development of breast cancer fall women in this study lived at least to age 40). We would like to see if women who wait until later ages to have children are more likely to eventually develop breast cancer. Age at first birth $25 1526 5834 7360 25 1694 4391 6085 Breast cancer 3220 No breast cancer 10225 13445