If you conduct a study in which you test 20 different hypotheses, then you expect to obtain one result with p < 0.05 even if all of the null hypotheses are true. Suppose you do a study in which you conduct 20 independent hypothesis tests and you obtain 3 p-values less than 0.05. Which of the following is a true statement?
a. Based on your data alone, you can be reasonably confident that two of your findings represent true associations.
b. Based on your data alone, you have no way of knowing whether any of these associations might be true.
c. The probability that all three identified associations are spurious is so small that you can be reasonably confident that you’ve at least identified something of interest.
Ans: b
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Which of the following are two examples of medical malpractice?
A. Securing informed consent and failing to diagnose a condition B. Making a mistake during surgery and issuing an accurate diagnosis C. Securing expressed consent and failing to explain the likely results of a patient's treatment D. All of the above E. None of the above
A 49-year-old male has been stabbed in the lower right chest. Police tell you that the patient got into an argument with an unidentified man, who then stabbed him before fleeing the scene. After assessing the patient, you are suspicious that the knife punctured the lung and is causing internal bleeding. In this situation, the mechanism of injury would be:
A) Stab wound to the right chest B) Assailant with a knife C) Penetrating trauma to the lungs D) Internal hemorrhage