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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 an experiment? c. For the population of women whose mothers took the drug DES during pregnancy, a sample of 3980 women showed that 63 developed tissue abnormalities that might lead to cancer. Provide a descriptive statistic that could be used to estimate the number of women out of 1000 in this population who have tissue abnormalities. d. For the population of women whose mothers did not take the drug DES during pregnancy, what is the estimate of the number of women out of 1000 who would be expected to have tissue abnormalities? e. Medical studies often use a relatively large sample (in this case. 3980). Why ?

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STATISTICS F/BUSINESS+ECONOMICS-TE...

13th Edition
Anderson
Publisher: CENGAGE L
ISBN: 9781305881884
BuyFind

STATISTICS F/BUSINESS+ECONOMICS-TE...

13th Edition
Anderson
Publisher: CENGAGE L
ISBN: 9781305881884

Solutions

Chapter
Section
Chapter 1, Problem 21SE
Textbook Problem
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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.

  1. a. This study compared two populations. What were the populations?
  2. b. Do you suppose the data were obtained in a survey or an experiment?
  3. c. For the population of women whose mothers took the drug DES during pregnancy, a sample of 3980 women showed that 63 developed tissue abnormalities that might lead to cancer. Provide a descriptive statistic that could be used to estimate the number of women out of 1000 in this population who have tissue abnormalities.
  4. d. For the population of women whose mothers did not take the drug DES during pregnancy, what is the estimate of the number of women out of 1000 who would be expected to have tissue abnormalities?
  5. e. Medical studies often use a relatively large sample (in this case. 3980). Why ?

Expert Solution

a.

To determine

Find the populations of the study.

Explanation of Solution

The given information is that the medical research was done on the women mother who took drug DES during the pregnancy. The research results tells that the mother who took drug DES two times during pregnancy is as likely as to develop the abnormality tissues to lead cancer compared with the mothers who did not take drug.

In the experiment, the researcher focuses on two types of populations...

Expert Solution

b.

To determine

Identify whether the data are obtained by survey or experiment.

Expert Solution

c.

To determine

Estimate the number of women, out of 1,000 in the population, who have tissue abnormality that is seen in the sample of mothers who took the drug during their pregnancy.

Expert Solution

d.

To determine

Estimate the number of women out of 1,000 in the population who have tissue abnormality in the sample of mothers who did not take the drug during their pregnancy.

Expert Solution

e.

To determine

Explain the reason using a relatively large sample for medical studies.

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