Suppose that a word-association experiment is conducted using eight people as blocks and making a comparison of reaction times within each person; that is, each person is subjected to both stimuli in a random order. The reaction times (in seconds) for the experiment are as follows.Person Stimulus 1 Stimulus 2 1 2 5 2 1 3 3 1 3 4 2 2 5 1 3 6 2 4 7 3 3 8 2 4

Do the data present sufficient evidence to indicate a difference in mean reaction times for the two stimuli? Test using = 0.05. (Use _{1 2} = _d.

Round your answers to three decimal places.)

1-2. Null and alternative hypotheses: H₀: _d 0 versus H_a: _d = 0

H₀: _d < 0 versus H_a: _d > 0

H₀: _d = 0 versus H_a: _d > 0

H₀: _d = 0 versus H_a: _d < 0

H₀: _d = 0 versus H_a: _d 0

3. Test statistic:t = 2

4. Rejection region:If the test is one-tailed, enter NONE for the unused region. t > 3 t < 4

5. Conclusion: H₀ is rejected. There is insufficient evidence to indicate a significant difference between the stimuli.

H₀ is rejected. There is sufficient evidence to indicate a significant difference between the stimuli.

H₀ is not rejected. There is sufficient evidence to indicate a significant difference between the stimuli.

H₀ is not rejected. There is insufficient evidence to indicate a significant difference between the stimuli.