A Researcher Is Estimating the Average Difference Between Two Population

question 46

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