(Solved): A seven-year medical research study reported that women whose mothers took the drug DES during pre ...

A seven-year medical research study reported that women whose mothers took the drug DES during pregnancy were twice as likely to develop tissue abnormalities that might lead to cancer as were women whose mothers did not take the drug. a. This study compared two populations. What were the populations? b. Do you suppose the data were obtained in a survey or in an experiment? c. For the population of women whose mothers took the drug DES during pregnancy, a sample of 3,980 women showed that 63 developed tissue abnormaties that lead to cancer. Provide a descriptive statistic (to 1 decimal) that could be used to estimate the number of women out of 1,000 in this population who have abnormalities. (3) out of 1,000 women developed tissue abnormalities (3) out of 1,000 women developed tissue abnormalities e. True or false: Medical studies often use a relatively large sample (in this case, 3,980 ) because disease occurrences can be rare and difficult to observe when isolated populations are considered.