A Researcher Is Estimating the Average Difference Between Two Population

question 78

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 90% confidence interval,the table t value would be _______.

• A)1.86
• B)1.397
• C)1.533
• D)2.132
• E)3.346

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