The Following Information Was Obtained from Matched Samples Taken from Two

Multiple Choice

The following information was obtained from matched samples taken from two populations.Assume the population of differences is normally distributed. ​ If the null hypothesis H₀: μd = 0 is tested at the 5% level,

A) the null hypothesis should be rejected.
B) the null hypothesis should not be rejected.
C) the alternative hypothesis should be revised.
D) the null hypothesis should be revised.