Question: Refer back to the previous exercise. a. By far the most frequently tested null hypothesis when data is paired is . Is that a sensible

Refer back to the previous exercise.

a. By far the most frequently tested null hypothesis when data is paired is . Is that a sensible hypothesis in this context? Explain.

b. Carry out a test of hypotheses to decide whether there is compelling evidence for concluding that on average diagnosis occurs more than 25 months after the onset of symptoms.

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