Information and IdeasVery hardReading a table from a drug trial
Information and Ideas practice question
Recovery within one week
Group | Patients | Recovered
Drug | 200 | 30
Placebo | 200 | 28
A reviewer argues that the trial does not show the drug speeds recovery, because ____
Which choice most effectively uses data from the table to complete the statement?
- A. the difference of two patients between the groups is too small to rule out chance.Correct
- B. only 30 patients in the drug group recovered.
- C. the placebo group had 200 patients.
- D. 28 patients recovered without the drug.
Answer: A. the difference of two patients between the groups is too small to rule out chance.
Two patients out of two hundred.
Why the other answers are wrong
- B. only 30 patients in the drug group recovered.
- A count, no comparison.
- C. the placebo group had 200 patients.
- Size alone.
- D. 28 patients recovered without the drug.
- A count, no comparison.
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