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Suppose a 95% confidence interval for μ turns out to be (1,000,2,100) .To make more useful inferences from the data,it is desired to reduce the width of the confidence interval.Which of the following will result in a reduced interval width?
Qualitative Studies
Research methods focusing on descriptive, in-depth analysis of social phenomena, often through interviews, observation, and text analysis.
Interviews
Interviews are a method of data collection in research, as well as a process in hiring, where questions are asked to elicit information from an interviewee for various purposes.
Observations
The process of closely monitoring, recording, or noting phenomena as they occur in natural settings, often used as a method in scientific studies.
Census Of Population
A systematic enumeration of a population, typically recording details of individuals such as age, gender, occupation, and ethnic background.
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