A proposed null hypothesis states that there is no difference between two population means. The sample mean difference is 22, and the standard deviation of the difference between the sample means is 10. Which conclusion can we draw if we choose the 95% confidence level?
A. There appears to be a difference between the means of the two populations.
B. There appears to be no difference between the means of the two populations.
C. There appears to be a difference of 0 between the means of the two samples.
D. There appears to be no difference between the means of the two samples.

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