Many over-the-counter decongestants and appetite suppressants contain the ingredient phenylpropanol-amine. A study was conducted to investigate whether this ingredient is associated with strokes. The study found that 6 of 702 stroke victims had used an appetite suppressant containing phenylpropanolamine, compared to only 1 of 1,376 subjects in a control group. The following table summarizes these data.

(a) Calculate the sample value of the odds ratio.
(b) Construct a 95% confidence interval for the population value of the odds ratio.
(c) Upon hearing of these data, some scientists called the study "inconclusive" because the numbers of users of appetite suppressants containing phenylpropanolamine (7 total: 6 in one group and 1 in the other) are so small. What is your response to these scientists?

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Stroke No stroke Appetite suppressant? Yes 696 Total 702 1,375 1.376