Indicate whether the data represented in the following example is part of a population or a sample:
51 patients in the Emergency Department expired during the past year and the hospital is requesting an analysis of the deaths
A) Sample
B) Population
B
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Type ________ diabetes is ideally treated with diet and exercise, along with the administration of oral hypoglycemic medications to help control the blood sugar levels
a. 1 b. 2 c. 3 d. 4
You are called to the scene of a vehicle crash in which a car was rear-ended while stopped at a stop sign. Which of the following laws of physics serves as the basis for analyzing the mechanism of injury and the associated index of suspicion for injuries?
A) The amount of energy transmitted to an object is inversely proportional to its rate of deceleration. B) Energy can neither be created nor destroyed. C) A body at rest will remain at rest unless acted on by an outside force. D) A body in motion will remain in motion unless acted on by an outside force.
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.
What do all chronic myeloproliferative disorders share?
a. Philadelphia chromosome b. Increased red cell mass c. Increased blood cells; overlapping clinical and laboratory features d. Serious thromboembolic complications