Exam 9: Examining Populations and Samples in Research

If 100 potential participants meeting sampling criteria are approached to participate in a research study,and 5 patients refuse,then the refusal rate as a numeral would be _________________ percent.

A researcher enters a list of subjects from a sampling frame into a computer and the computer randomly assigns subjects to control or treatment groups.This is an example of

Which is a type of nonprobability sampling?

A pilot study reveals a wide variation in measurement values among subjects with an overall mean value that is higher than among the general population.By increasing the sample size in a subsequent study,the researcher expects to

Which of these sampling techniques is least likely to produce findings that are generalizable to a larger population?

A researcher conducts a pilot study using a convenience sample of children with seizure disorders.A reviewer of this study's manuscript may conclude that the findings of this study

Prior to initiating a research study,a researcher conducts a power analysis to determine the sample size necessary for a power level of 0.8 and an alpha of 0.05.The researcher will

A researcher wishes to conduct a study to determine the effects of an intervention on high school students.In this study,high school students represent the

A researcher who wishes to study the effects of a prenatal breastfeeding education program on the length of time African-American inner-city women breastfeed infants learns that 70% of women in the target population are unmarried.To achieve stratified random sampling in a sample of 50 subjects,the researcher will