chapter 10

in interpreting quantitative research results, the representatives of the sample is most closely tied to which of the following?

A. Internal validity

a researcher who wishes to study the impact of having a child with cystic fibrosis on family functioning contacts the local chapter of the Cystic Fibrosis Foundation for assistance in finding parents to interview. Parents of children with cystic fibrosis in the local chapter are the:

B. Accessible population

in a study of nursing students' attitudes toward caring for patients with hypertension who are noncompliant with their medications, the researcher randomly selected a sample of nursing students from a list of all students enrolled in each of five nursing programs that had been randomly selected from one state. Because the sample was randomly selected, to which population can the findings be generalized?

B. Nursing students in the state from which the programs were randomly selected

which of the following types of studies would require the largest sample size?

C. A study involving multiple variables

a researcher has decided to conduct a satisfaction survey among all of the patients who presented to emergency department over a 2-month period of the time. this is an example of which sampling method?

C. Convenience sampling

a sample that accurately reflects the characteristics of the population is known as which type of sample?

C. Representative sample

when is determination of an adequate sample size in qualitative research determined ?

C. Saturation and redundancy of data are achieved

a power analysis determined that a sample size of 196 would provide a power of 0.80 with an alpha less than 0.05. The study enrolled 202 subjects. Is the sample size adequate, and why?

C. Yes, the sample size was supported by a power analysis

which of the following would be the strongest method for assigning 50 subjects to treatment and control groups in an experimental study?

D. Assign each participant a number. place the numbers in a box, and draw numbers from the box, alternating placement in either the treatment group or the control group

a nurse wishes to explore attitudes of critical care nurses toward family presence during resuscitation. She selected for interview 10 nurses who favored family presence and 10 who did not. This is an example of which sampling method?

D. purposive sampling