A researcher completes an independent-samples t test and finds that the probability of two sample means being this far apart, if the null hypothesis is true, is less than .05. Which of the following is true?
a. μ₁ = μ₂
b. M₁ ≠ μ₁

c. There probably is no difference between  the two population means.
d. There probably is a difference between the two population means.
e. Sufficient evidence does not exist to draw any conclusion about the population means.