The average age for all medicare patients in the usa is 75., Ask an Expert

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The average age for all medicare patients in the USA is 75. A sample from a clinic shows that the average age of the clnic medicare patients is 78.

a. What are the null and alternative hypotheses to test if the average age of the clinic mediare patients is significantly different from the national aveage?

b. Suppose you find that the z= 2.05. What conclusions should you draw for alpha=0.05? (Critical value for z= 1.96 and alpha=0.05 and z=2.576 for alpha=0.01)

c. What conclusions should you draw for alpha = 0.01 (for z=2.05)?

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