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Null and Alternative Hypotheses of Average Age

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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 clinic 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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Solution Summary

This solution provides the null and alternative hypothesis, calculates the test statistic, compares it to the p-value/critical region and makes a decision to accept or reject the null hypothesis.

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