Suppose you are testing the hypotheses H 0 : d = 0 and H a :

Suppose you are testing the hypotheses H₀: μ_d = 0 and H_a: μ_d ≠ 0 in a paired-design and obtain a p-value of 0.21. Which one of the following could be a possible 95% confidence interval for μ_d?
A. −2.30 to −0.70
B. −1.20 to 0.90
C. 1.50 to 3.80
D. 4.50 to 6.90