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Question: "Alterations in Brain and Immune Function Produced by Mindfulness Meditation" on the CD. For this study, volunteers were randomly assigned to a meditation group (25 participants) or a control group (16 participants). The meditation group received an 8-week meditation training program. Both groups were given influenza shots and their antibodies were measured. This measurement was taken after the meditation group had been practicing meditation for about 8 weeks. The researchers also measured brain activity, but these exercises will not explore that part of the study.

a. Do you think the alternative hypothesis used by the researchers was onesided or two-sided? Explain.

b. Do you think the researchers would be justified in specifying a one-sided alternative hypothesis in this situation? Explain why or why not.

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