Which ensures that a study's results are not due to chance alone?
A) Rejecting the null hypothesis
B) Setting the p value to .05
C) Calculating the risk ratio
D) Using a preventive study design
Ans: B
Feedback:
The researcher should set the expected statistical p value, generally at .05, to ensure that the study results are not due to chance alone. Rejecting the null hypothesis when it is true is known as a type I error and does not ensure that a study's results are not due to chance alone. Relative risk is a ratio ranging from 0 to infinity that indicates the strength of the association between the risk factor and the outcome. However, calculating it does not ensure that a study's results are not due to chance alone. Using a preventive study design does not ensure that a study's results are not due to chance alone.
You might also like to view...
An overweight, sedentary middle-aged smoker with a family history of cardiac disease has noticed a steady rise in resting blood pressure over a 3- to 4-year period
The patient is concerned about his slightly elevated blood pressure and begins walking 20 to 30 minutes in the evenings with his wife and reduces his pack-a-day cigarette habit to ten cigarettes a day. This person has taken the first steps in: a. risk factor reduction. b. self-actualization. c. self-transcendence. d. health promotion.
A nurse has been assigned to a female patient who is to begin chemotherapy. The nurse will initiate the prescribed oprelvekin therapy
A) 6 to 24 hours after chemotherapy. B) 2 days after chemotherapy. C) 6 days after chemotherapy. D) 10 days after chemotherapy.
A nurse is caring for a patient with mitral stenosis. Based on the pathophysiology of this disease process, the nurse would expect the patient to exhibit which of the following heart rhythms?
A) Normal sinus rhythm B) Supraventricular tachycardia C) Atrial fibrillation D) Electromechanical dissociation
A nurse caring for an infant undergoing antibiotic therapy sees that the infant has painless white patches on the oral mucosa. The nurse suspects this to be:
a. colic c. pruritus b. dysplasia d. thrush