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A population mean is to be estimated from the sample described. Round your answer to one decimal place if necessary. Assume that all confidence intervals use a 95% confidence level.
-Sample size = 3025, sample mean = 244, sample standard deviation = 80 What is the margin of error?
Quasi-experimental
A research design that attempts to establish cause-and-effect relationships but lacks random assignment of participants to control or experimental groups.
Correlational Investigations
Research methods that explore the relationship or association between two or more variables without determining causality.
Experiments
Controlled procedures carried out to investigate relationships between variables, often to test a hypothesis.
Quasi Experimental
A research design that attempts to establish a cause-and-effect relationship but lacks random assignment of participants to conditions.
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