Which of these is the correct way to calculate an approximate 95% confidence interval for the mean
Question:
Which of these is the correct way to calculate an approximate 95% confidence interval for the mean difference based on paired data with x?d = 3.5, sd = 2.4, and n = 40?
A. 2.4 ± 2(3.5/ √40)
B. 2.4 ± 2 √3.5/40
C. 3.5 ± 2 √2.4/40
D. 3.5 ± 2 √2.4/40
E. 3.5 ± 2(2.4/√40)
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Related Book For 
Introduction To Statistical Investigations
ISBN: 9781119683452
2nd Edition
Authors: Beth L.Chance, George W.Cobb, Allan J.Rossman Nathan Tintle, Todd Swanson Soma Roy
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