A Researcher Is Estimating the Average Difference Between Two Population

question 3

Multiple Choice

A researcher is estimating the average difference between two population means based on matched?pairs samples.She gathers data on each pair in the study resulting in: Assume that the data are normally distributed in the population. To obtain a 95% confidence interval,the table t value would be _______.

• A) 2.132
• B) 1.86
• C) 2.306
• D) 2.976
• E) 2.776

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