Consider the following competing hypotheses:

H₀:_D 0;H_A:_D< 0 d = 2.8, s_D= 5.7, n= 12

The following results are obtained using matched samples from two normally distributed populations:

Interpret the results at= 0.05. (Choose the correct answer)

We can conclude that the mean difference differs from zero.

We cannot conclude that the mean difference differs from zero.

We conclude that the mean difference is less than zero.

We cannot conclude that the mean difference is less than zero.